Well I'm just gonna say I don't think Shuey ducks for free kicks. Maybe he has his reputation for a reason (I know I've cringed at some frees he has been paid in the past), but with the second one the other night that led to a goal, he played on after the after the contact and didn't accentuate it. The fact that he didn't even hesitate for a moment before playing on suggests he wasn't expecting to be paid it.
So why bend the knees at all then? Lowering your centre of mass makes it way easier to change direction. I'm not sure how you can possible expect players not to do something that makes them more agile, just because people don't like seeing free kicks result from it occasionally and then whinge that they were playing for it.
And that's not even to mention that for the first one that led to a goal he was picking up the ball - what's he supposed to do? Stand there and spectate like the rest of our mids?