Ahh.. very good point Bernie. No, there isn't any way to toggle that off on an individual member basis. Since I have that same restriction at work.. and notification for excess access to such sites.. I'm going to turn it off for now. It's a feature that has been available for a long time, I just turned it on as a trial.
What I'll do is suggest to the software developer to have an option to turn off Tweet / Facebook features in each user's profile. Hopefully they will incorporate that in the next update.
Thanks for bringing that to my attention.
PaulC