That one was pretty obvious, ball was to the left (you can't even see the ball on the camera), he had no reason to run into Finn. I don't really think there was any particular bias to either, both had rough calls on many occasions. Especially in the 3rd Hamza was blocking on quite a lot of the "no lets" Finn got. Most of Hamza's bad calls were in the 4th and 5th, but his movement was already declining, and his body language might have influenced the ref's decision a bit.

Nah, the guy was all kinds of scum. Purposefully trying to disrupt rhythm when the other guy won a point with stalling.