It's been sometime now that a quick lineout throw doesn't have to be perpendicular to the line of touch. The throw-in still can't go forward, though, and of course one doesn't have to throw the ball in from exactly where the touch judge raises his flag, but from behind that point as well. »
Well, we could go back to the old law when ball had to be released right away, as in right away, not a second and a half or more later. Look at some old film: open field tackles like that usually meant a loose ball bouncing or rolling around, as the tackled player would release it going to ground, not on the ground as in recent times, a second or two later.
Perhaps, but he got to his feet quickly. Look at that last pass in the movement: if a referee really wanted to nit-pick, the pass could have been ruled as being off the ground and not done soon enough. Certainly a second later and it should have been a penalty.