sometimes in the multiplayer it will go to host migration, it will kick me from the match.. my xbox will freeze for about 10 seconds, then i try to find another match and it disconnects me from XBL.... this is the only game that this has happened to me on. what is it?

Happens to me sometimes, the Host migration seems to Fail most of the time, And It seems that getting a successful Host Mig is considered "lucky".

yes exactly

At the moment they're still trying to iron out some network problems. Seems as though host migration is not very functional at the moment, I'm sure it'll be fixed in time.

xbox does that on other games as well not just crysis 2 i think it is for more processing power on the xbox because connecting to the internet uses a lot of processing power