One-handed backhand question

[kpktennis]

Had two questions about the one handed backhand, for those with a powerful modern 1hb.

1) Would you say the stroke path (lets say the butt cap for the sake of visualization) is following a path that is more like circumscribing a circle or one that is more linear/back to front?

2) I can hit the ball with quite a bit of pace but I find that sometimes this imparts a bit of side spin on the ball, was wondering exactly how the racquet is supposed to squarely approach the ball right before contact? Is it like a slight forearm deviation or...