[geormiet]

Since losing players like this guy aren't earning money at the table, a lot of them need another form of motivation for playing.

Some guys get satisfaction from playing super tricky and occasionally pulling off succesful crazy plays, while others like to get under their opponents skin and piss them off, e.g. slowrollers.

You handled it right, your attitude is right. You take away this from the guy, you might take away his reason to play at all. After all, he's paying for the privelage to act like a douche.