She is. All of her behaviours are to do with her guilt over the affair. You will not make much progress until you tackle the affair.
Your wife has gotten into a pattern of having her needs met in two places. Initially she thought OM could do this but typically APs can't do it alone. She needs to keep you on the hook without ending her affair. Its an addiction and the only way to end it is to go at the source - the affair. She will not make much sense at this time and won't remember much of it later on. I'm sure you struggle to remember your affairs and were glad to be free of them.
Last time I brought it up was Sunday and it went into monday.
Wife says she feels unsafe and scared of me.
That's concerning. Usually this preceeds a false accusation of domestic violence. You should keep a voice recorder on you at all times to protect you. Her judgement is severely compromised.
No Facebook only google+ and I think I'm blocked from it.
Should I try and contact all his family and call him at work.
He is also on linken.
Won't that pusher further away and into his arms?
Should I give him a warning to stop messaging her or I will expose him for what he is?
She will be furious like a drunk who's had the bottle taken away - but the main thing is it will be taken away. She won't be able to introduce him as her new boyfriend later on and he will run for the hills.
You should expose your own affairs to your own family and in laws while asking for their help.
Your real target is OM. Of course don't warn him - how far would he have gotten if he had warned you?
Who is he? Married/single? Who would his exposure targets be?
If he's on LinkedIn then he'll be worried about his online image and an inclusion on a cheaterville site would be effective.