Yellow was fine for both IMO.
Gorrin's meanwhile was an awful, cynical tackle and definitely a dark yellow.
Of the penalties, the handball was definitely one for me...can't have your hands up there. The wrestling one probably not, the one at the end who knows (referees in Germany are saying situations like that are easier to judge because of the lack of noise, they hear contact much easier).
Apart from that I thought the ref did well, let it flow and got most decisions right.