He still had his knee down when he lost the ball. I know that is what they called, but that can't possibly be the rule. He caught the ball, had possession when he hit the groung, and lost possession when he was getting up. I agree with you of course...just thought you wanted to know the explanation. Crazy. By the ref's logic, he could've rolled around on the ground for 30 seconds, but if he lost the ball before both knees were off the ground, then it's incomplete.