Nostalrius Begins - Quality wow vanilla realm (1.12)

Was playing with my lvl 10 hunter and my lvl 46 priest friend came by to help a bit with my hunter quest.
He dueled me and mindcontolled me then i got disconnected and couldnt log in again cause account was closed. Tried to log in to the webpage and it said I was banned for "CHEAT_TYPE_DESYNC(Tick:682921046)/NumDesync(Tick:8)"