You described it as a "free trip to MTV" as if it were some kind of a perk. It's wasting two days of somebody's time, and apparently showing no remorse. At that point the ball should have been clearly in Google's court, surely they could have figured out a less painful way of gathering any extra data they needed. I mean, the guy was in NYC! It should have been trivial.

It's well known both inside Google and outside it that many parts of the hiring process are badly broken. Suggesting that people should just grin and bear such abuse just means the process will never get fixed. While if people just stopped the process if it got silly enough, somebody's bonus would be in sufficient jeopardy to cause some action.

(When I worked at Google I never referred any friends unless they asked me to -- the chance of them having a bad experience was just too high. And recruiters were always pretending to be shocked that anyone could think the process wasn't working properly.)