If you jump, and the offense moves, that's technically an offsides, I think. It doesn't result in a dead-ball. Again, I think so. Not 100% sure. That’s what I always thought. I couldn’t tell on the second one but the first sure looked like he was back onside before the ball was snapped. It didn’t matter as that was the TD though. I know on the first one when he crossed the line the RT flinched, so that would be an offsides even if he got back. the 2nd one shouldn't have been, but ultimately didn't matter.