But it doesn't matter if it didn't happen or not. He stayed on the ground. If he had gotten up and the ball was stripped, then it would've been a fumble, sure.
This wouldn't even be an issue if someone hadn't stripped the ball out of his hand, but it's ultimately a judgment call by the refs to determine when he "gave himself up" on the play. Cruz was stupid for not playing to the whistle, and anyone who doesn't play to the whistle is stupid. The Cardinals did the right thing by trying to strip the ball and take it because the whistle hadn't blown.
I'm not really sure what I even think about the call right now, but it's not as black and white as some people are saying.
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"I couldn't stand a day without a past or future. I need to live each moment to keep fighting here and now."