Since he already lost a challenge he has no chance to get an extra challenge, he would have been out of them.
another completion to the WR for first and goal, I say dungy should have challenged it. who knows if he doesn't have to challenge another play/ there you go, not challenging cost you 7 points
Easy to say in hindsight, but even then it still would have been stupid. It's only the second quarter. You can take the chance that you don't have to challenge again, but you can't take the chance of the refs freaking up the game for you late in the fourth quarter. Alsom it only really cost them 4 points.
Definitely not down. That's a fumble. EDIT: Take away that "definitely". The other angle shows it's much closer than I previously thought.