This sounds like an over zealous server admin. Your better off finding a better server.
If the pings are good, check out aan server at
http://www.allaboutnothing.net. it's some of the old AA.com members.
or
the Aftermath server located at
66.151.108.103
If you just added maps then you should be OK, There are times when you add some skins that could be on the servers ban list.
Good luck