I think you can worry about the way Amber was treated last night by Michael, and worry about Michael overall.
He shouldn't have treated her like that, it was horrible.
Belle's behaviour was poor too, but she flared up and then resolved it. Michael's resentment has simmered away with Amber much longer.
I agree, the production team seem to have repeatedly manipulated him into a triangle with Amber. He could have handled his recoupling so much better, but instead he chose to blame Amber. I think his pride has been hurt.
I really hope he, like Amy and anyone else who needs it, gets lots of support on the outside.
They are all treated like rats in a lab, and the more you think about it, the more uncomfortable viewing the whole show is. They have to turn sacrifice some of them as 'villains' or the ratings would be crap.