Here's a log of some of his recent commands for the record. This is output from a zgrep I did on the log archives I downloaded. The //replace 0 commands seem to be when the grief happened.
2019-08-13-4.log.gz:[13:54:23] [Server thread/INFO]: miwojedk issued server command: /
2019-08-13-4.log.gz:[13:54:24] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[13:56:30] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[13:56:37] [Server thread/INFO]: miwojedk issued server command: /O Rrj I take offence to that
2019-08-13-4.log.gz:[13:57:05] [Server thread/INFO]: miwojedk issued server command: /o you thinking im a retarded admin
2019-08-13-4.log.gz:[13:59:28] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:08:16] [Server thread/INFO]: miwojedk issued server command: //Wand
2019-08-13-4.log.gz:[14:08:25] [Server thread/INFO]: miwojedk issued server command: //pos2
2019-08-13-4.log.gz:[14:08:28] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:08:35] [Server thread/INFO]: miwojedk issued server command: //limit -1
2019-08-13-4.log.gz:[14:08:38] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:09:02] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:09:04] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:09:09] [Server thread/INFO]: miwojedk issued server command: /creative
2019-08-13-4.log.gz:[14:27:57] [Server thread/INFO]: miwojedk issued server command: /cmdspy
2019-08-13-4.log.gz:[14:28:05] [Server thread/INFO]: miwojedk issued server command: /speed 10
2019-08-13-4.log.gz:[14:28:12] [Server thread/INFO]: miwojedk issued server command: /up 50
2019-08-13-4.log.gz:[14:28:15] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:28:26] [Server thread/INFO]: miwojedk issued server command: /o so WE is basically broken again
2019-08-13-4.log.gz:[14:28:28] [Server thread/INFO]: miwojedk issued server command: /o coolio
2019-08-13-4.log.gz:[14:43:58] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:44:42] [Server thread/INFO]: miwojedk issued server command: /o Hi Fionn
2019-08-13-4.log.gz:[14:44:54] [Server thread/INFO]: miwojedk issued server command: //pos2
2019-08-13-4.log.gz:[14:44:59] [Server thread/INFO]: miwojedk issued server command: //pos2
2019-08-13-4.log.gz:[14:45:06] [Server thread/INFO]: miwojedk issued server command: //pos1
2019-08-13-4.log.gz:[14:45:07] [Server thread/INFO]: miwojedk issued server command: //Replace 0
2019-08-13-4.log.gz:[14:45:11] [Server thread/INFO]: miwojedk issued server command: //limit -1
2019-08-13-4.log.gz:[14:46:10] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:49:58] [Server thread/INFO]: miwojedk issued server command: /o Hi taahanis
2019-08-13-4.log.gz:[14:50:01] [Server thread/INFO]: miwojedk issued server command: /o didn't see your message
2019-08-13-4.log.gz:[14:51:02] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:51:07] [Server thread/INFO]: miwojedk issued server command: /o
2019-08-13-4.log.gz:[14:51:33] [Server thread/INFO]: miwojedk issued server command: //pos2
2019-08-13-4.log.gz:[14:51:41] [Server thread/INFO]: miwojedk issued server command: //pos1
2019-08-13-4.log.gz:[14:51:43] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:51:46] [Server thread/INFO]: miwojedk issued server command: //limit -1
2019-08-13-4.log.gz:[14:51:47] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:51:56] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:51:56] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:51:57] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:51:57] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:51:58] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:52:02] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:52:02] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:52:03] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:52:07] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:52:08] [Server thread/INFO]: miwojedk issued server command: //replace 0
2019-08-13-4.log.gz:[14:52:09] [Server thread/INFO]: miwojedk issued server command: //replace 0