-Maybe your record was just beat by others...
-That thread doesn't show all records that used to be hacks, only those that are spotted by a non-admin player while there's no admin lvl 3 online to delete it. So if your record was considered as a hack, it may have been deleted without giving the information in that thread. But you'd have been ip banned if the record was a cheat.
-Maybe also you weren't registered in the server (/register), people need to be registered to keep their records/statistics.