WRT the crash being deliberate or not.
Sport is about winning. Winning means beating your opponant within the rules. To win takes practice to be adept at the gameplay and it takes practice to be adept at tactics. *if* he took a tactical crash, in order to force a restart, he has executed a masterful tactical stroke, at risk of injury, that worked.
In my sport, there is still rumblings about how unfair it was for one team to accept deliberate (non contact) penalties, which gave them the edge to let their team score enough points to win in the dying seconds of the game. They didn't foul the other team, or pretend that they had fouled, they exploited a the rules to their advantage. The other team said that it was unfair, but what they meant was that they had failled to respond with a counterattack (which they could have very easily done).