Wow. Shot twice and still has a chance to recover. That's incredibly good news.
As far as the comments go...try not to get too upset at them. People post inappropriate comments like that for a number of reasons, and from what I can tell, most people aren't saying it because they're deranged or because they intend to hurt people's feelings...For example, the guy who said "karma for this douche ape", I highly doubt he actually believes the player deserved what happened...he probably just learned what happened to the player and then connected his already existing thoughts/opinions on that player with what happened, knowing that saying that will not in any way affect whether or not he recovers.
I know I have a tendency to stick up for people who say and do inappopriate things, but really I just don't want people to live in fear of everyone else and think that society is going to hell. It's really not. And for the record I think that is a really awful thing to say in response to this incident.