Your bad shot suggests the opposite IMO.
A pull would suggest your club face is matched to your path (Left of target)
As you're a fader of the ball (As per your OP), I would suggest that your grip, on the bad shots, has slipped the other way and gotten a little stronger.
This matches the club face to your path at impact hitting it left, as opposed to the face being fractionally open to the path giving your usual fade.
