They don't understand who he is or what he is. Hatton is a football thug in a suit.
I don't disagree with the decision to kick him out of the party, he was just using it for his own agenda, a 30 year ban is pretty effective and unless he's still behaving the same way etc, I think it's fine to let him join up as an ordinary member.
I get it, I'm probably being too forgiving, complacent or something, I hope he isn't rejoining just to be a dickhead again.