Depends on what you mean by "ok". Being a jerk to him might have some beneficial effects, mainly you yourself feeling better ("Now I've shown him, ha!") or mayb

Depends on what you mean by "ok". Being a jerk to him might have some beneficial effects, mainly you yourself feeling better ("Now I've shown him, ha!") or maybe he realizes his wrong ways. I'd doubt the latter and the former doesn't help too much in the situation (unless you only care about your mood). I'd try talking to the guy first, with well formed arguments and especially leaving out the word "jerk" or synonyms. Walk him through how it probably felt for the candidate (in the usual form of 'when you did X, the candidate probably felt Y) and show them how it's actually bad for the hiring loop, candidate experience and the company's reputation. Show him alternatives, too. Offer pair practice. See how he reacts. If he doesn't react well to this, take it one level higher as this can very quickly get to hardly reversible bad results.