Howard tried to make a smarmy comment. Gard put his hands on his chest and arm to stop him and continue the conversation. Howard then fisted his hand into his shirt and hit Gard in the nose with his finger.
Gard released him the minute he said, "Don't f***ing touch me."
If I recall my one ill-fated year of law school correctly, that's enough to merit a retreat and torpedo any argument of self-defense. Not to mention Howard hit an assistant, not Gard. That's definitely out of line if his argument is self-defense considering the assistant didn't do anything to him that we can see on camera, and there were several people between the two.
In short, Howard needs to talk a long walk off a short pier with that argument. So does anyone who supports him in this instance.