So I just disabled the Facebook contacts sync on my phone, because as of today it is useless for me. I'm also thinking of uninstalling the Facebook app, because the web interface is good enough for me, and I kept the Facebook app just for the contacts sync.
Good luck with that. I can't uninstall the facebook app because my carrier decided that this app is not optional. It just can't uninstall.
Android Samsung Galaxy S2 on Rogers
Root it, install titanium backup, remove it (if its not rootable then there is no way that im aware of).
That's what I did for my HTC desire so I could remove the crapware (fb app included) on it.
Why is the facebook sync useless to you? Our service (connex.io) also syncs with facebook (among others) and we are always interested in learning more about our customers. If you feel like explaining it to me in a bit more detail, you can send me an e-mail: michael@connex.io. Or you can just answer here and I'll follow the thread.