Fgs, Susan gets right on my wick lately!
I'm not sure Rob will keep playing along with the contact once it goes to once a month. Especially in a contact centre, he would loath being controlled like that. I think he will play the hard-done-by act and claim he'd rather have no contact than contact under those terms and just keep appealing the decision. Saying that though, I suppose it wouldn't go in his favour if he wasn't being seen to comply and make an effort. Oh I don't know!
I don't think he would snatch the children, not his style. I think he will lash out at someone, just not sure who!