"whilst flicking his left leg towards his right" - that was him leaving his left leg trailing as though the keeper had 'taken' it. It's the classic 'trailing leg' stunt seen every week and which has given rise to defenders and keepers faking a tackle/save then withdrawing at the last second so that they clearly make no contact. That's exactly what Krul did.
- if you watch from 0:40 s, then you will see it wasn't a trailing leg. He literally did flick it to the right as if Krul was some type of leper that would have infected him. His leg flicked to the right looks like a reflex to avoid touching krul at all costs.
Did his arms look like this when he hit the ground: Y
Yes.
This is known as the Y pose. It's as sure a dive litmus test as if they roll over more than 270 degrees on the ground.
The only wrinkle is is if someone made contact. This is a subvariation called Y-MTMOI.
But no contact was made so you do the maths.
lol. this is not conclusive evidence of a dive. perhaps in the split second he realised he fucked up and was on his way to the ground he thought his last hope to redeem himself was to strike a pose that might win him a penalty.
but I doubt he would do such a thing to his boyhood club. also you can clearly see from the video what happened. most strikers when they round the keeper will shift the ball at a diagonal angle. Carroll shifted it square by 90 degrees. This is where he was a pussy in my opinion, he didn't back himself to round the keeper unless he shifted the ball directly to the side making it fucking impossible for even lev yashin to get a hand to it. fair enough, but then as he was landing this meant the ball was under him rather than to the side. so his next mistake was to try and kick it forward whilst he was in the air. that is the physical reason which caused him to fall.
what you are proposing is that he intended for this. that he was able to calculate precisely which angle and speed to shift the ball at, and what trajectory to aim his jump at, so as to land on top of the ball with his right foot. You could combine the balance of George Best with the Physics of Einstein, and still come up short. He fell over.