Banned after changing Battleground

[Typ]

hi,
i joind the warsong battleground and there were many hords in oure base. I got a mindcontrol by a priest and in the same second also a arathi invite, so i dicide to change and go to arathi.
Than i falling donwn to the ground and the login screen appears. I try to relog and than that. Banned
I didnt use any hack or something else so why i got a bann?
Ingame name: Typ

[Robotron]

PM Daemon. The falling through the world triggered a "speed hack" false positive with the server's anticheat. If you're telling the truth and this is indeed what happened, Daemon should unlock your account.

[Typ]

thanks i ll contact him right now