Yes? “Sorry you’re really close to me and it’s making me uncomfortable and also you hit me a couple of times can you just back up a bit”
Perfectly reasonable thing to say? If he doesn’t do it, that’s another issue, but if you don’t say anything to his face but then tweet it into

The void of Twitter.... what are you expecting to happen? Or change? A bit of communication goes a long way. The dude is an arsehole, no doubt. But maybe in his self entitled mind he hadn’t realised. Or, maybe not enough people have called him out on it before.