Getting approval to invite guests in the past does not mean that all future invitations will be approved. How fucking thick do you have to be to not understand that?
It's not an invitation if you if you don't have approval. The professor was in the wrong for not getting approval. And no the dean most likely got approval. Your post doesn't say that the professor got declined just that he never got approval which could mean he simply did not request approval. Or maybe he did and got denied but idiots like you are drumming up such a false controversy that the school figures it would be better to simply allow him to speak at the university for the PR.You would mention the approval process if the invitation was dependent on it... otherwise you'd look awfully silly if it didn't get approved. And considering the Dean now just reinvited the guy, are you saying the new invitation is "fake" and the Dean has not followed the rules? Bearing in mind, this supposed "approval committee" has already said no.
This is most definitely beyond his limits if he does not own, manage, or administer the venue in anyway.From the view point of all, inviting a guest is not a strenuous or difficult procedure, this is not some complex thing lol. You invite someone to speak for an hour.... this is not the professor "abusing his power" or "going beyond his limits".