I find his grimacing a bit irritating, but I can get past that.
I think he's great for cycling. It's not amateur racing either. Sure, if you were in your club race and some guy kept sucking wheels and grabbing 'undeserved' wins, you'd be pretty annoyed. But these are the big boys. He helps make the racing happen. It's not like the rest in a breakaway don't know his modus operandi. If you can't drop him, and you can't double bluff him and have the gamblers/racers instinct to bet on whether the bunch is going to catch you or not and maybe you should sit on the back of a breakaway a bit more too, then boo hoo. And anyway, it's not like this is his sole method for taking wins.
Plus as others have pointed out, he should be commended for his loyalty to his team that nearly fell apart.