Ian Royal If it's accidental there is an argument it's not even a penalty, let alone a red card.!
it doesn't neeed to be deliberately handled to be handball.
The "deliberate" part concerns the position of the arm - i.e. was his arm in a natural position or had he deliberately positioned his arm? If your arm is out, then even if you are looking in the other direction, it's handball. If your arm is in a natural position and the ball hits it, then even it it prevents a certain goal, it's not handball.
With this one, there didn't look to be anything at all unnatural about his stance, and the ball came straight at him. There would be grounds for saying it's not handball, but he makes so much contact with the ball, dragging it round, that hardly any refs wouldn't give it.
Once given then there's no choice but to give a red card. It was a foul that denied a clear goalscoring opportunity, and therefore a red card. An intention to cheat doesn't come into it.