[jdankk]

I'm rebanning you for producing the same error. I am very sorry we have to do this but at this point there is no way we can let you play when you crash the server every so often.

This is the error you are producing:
2011-03-15 13:09:09 [WARNING] gimge25 had an illegal stance: -9.067383310286175E205

And I believe at this point you are running some sort of mod or have the game cracked which produces and error like such.

[Tokyo]

Possible fix to your problem: http://www.minerealm.com/community/view ... &view=next

An admin may need to delete his player dat file as well if this is indeed the cause.