Not going to read all of the posts in here, so don't know if it has been covered here, but one thing I question in the rules here is how is what Tate did considered possession?
To be simultaneous it has to mean they BOTH have possession of the ball. Putting one hand on a held ball is not simultaneous possession. End of story.
One handed catches have been made before...
Right, when that is the player clearly in possession of the ball and no other player has control of it. What he did is the same as pinning a ball to the ground, not a catch, not possession and sure as heck not simultaneous possession.
http://www.youtube.com/watch?v=ddEIlvH27u0best replays are around 7:14 and 7:24
Watch Jennings right ahnd and decide for yourself when you believe he establishes control, if at all

OK...did and yup, Jennings has full control, two hands, parts of arms and his chest all securing the ball. Tate has two, then one, then barely two hands on the ball and did not establish any control over the ball. To his credit, he never took his hands off of it, but he never had control either.
Let me put it to you this way, if Jennings isn't there and Tate is trying to hold the ball like that, he couldn't even hold onto it. He needs Jenning's control to keep it from hitting the ground. Touching is not = holding.
If I put my finger on top of your head, am I holding you? Just because a hand is making contact doesn't constitute holding it.