I was about to say the same thing. It wasn't handled great, but people make it sound like he personally hacked it himself or secretly scheming behind the scenes.
The part where he announced that the whole thing was bullshit and sued the DNC didn't exactly strike me as the behavior of a good guy whose employee just did a hugely unethical thing, to be frank.
A morally responsible individual would have...taken responsibility. That's what a leader is supposed to do!