I found the controls actually quite simple and easy to use. When you force grip something, it's not what the camera is looking at, it's what the apprentice is looking at. Also, yes it is difficult to accurately grab someone in a pile of something elses, but you just kinda have to go with it. "Oh, I wanted to grab that guy but I grabbed this crate. Oh well, I guess I'll smash it into the guy's face instead."
I agree this is unpleasant to deal with, imprecise controls that is, but it's really not that much of an impediment. It fits the game a little too, by accident. The Force unleashed. Doesn't sound like a game full of accuracy and needle-point precision.
Whatever, I didn't care. It was too much fun to mess people up with the force anyways.
On that note, try grabbing someone and then rotating the left or right sticks really fast. It looks hilarious.