Personally I find it disgusting that any fan should abuse one of their own players during a game. I mean, what sort of impact is it actually going to have on the player other than make him feel bad / pissed off? And how does it help others players who are considering a move here? I don't think I would have sarcastically clapped back though - I'd probably have opted for the middle finger ;-).
Bedders has had a couple of dodgy moments recently (as have most of the players) but looking at his career under Ralph he has been very reliable. Consistently getting in that last ditch tackle. And he's still only 25. A good squad player in my book who will always give 100% (unless he's getting a hard time from the fans).
Sadly, I've seen far too many Saints players getting that treatment down the years but thankfully most of them have gone on to become legends. Bobby Stokes, Kelvin Davis, Fraser Forster and Jason Puncheon all reacted badly when fans got on their backs but worked hard to win a place in folklore.