Hmm ... I tried to find out how exactly hostbots work, but the moderators didn't allow me to ask that question in the forums:
http://www.thehelper.net/forums/showthread.php?t=142790
Without any help, I can not fix the desync/disconnect issues with hostbots. Sorry for that.
If you are still interested try here
http://www.codelain.com/forum/index.php?board=16.0
It's the website of the only decent hostbot i know.
It seems desyncs happen in almost every oRPG after about 20 mins of gameplay, there is a thread about it here http://www.codelain.com/forum/index.php?topic=8824.15 (doesn't say anything map related but about bot code)
BTW can you up a beta so we can start seeing the differences between classes?