I was going to post this in the gameday forum, because there was a thread about this specifically, but since it's all locked up now, I posted it here. The part I thought was interesting, was that he says that Mike Pierra, a guy who I swear seems more like a Referee apologist more than anything else, called that final penalty which was declined, a bad call. I thought it was a bad call, but then thought maybe I didn't understand the chop block rule. According to Pierra, a chop block is thigh high or lower. The block in the endzone was definitely higher than that.
Of course Obamanu's non-stretch of the ball made the play meaningless, but I thought some others here might like to see the clarification he made.
The NFL rulebook can be difficult to interpret on the fly, but I was pretty sure officials erred when they called Seahawks guard Paul McQuistan for a chop block in the end zone. That ruling gave the 49ers an option to accept the aforementioned safety. Former NFL officiating director Mike Pereira protested the call: "That was not a chop block near the end. The second block was at the waist. It has to be in the thigh area or below. Glad it was declined."