Wasn't there a team who wanted to check in before settling their cab fare once and Phil said no go? I have a feeling they're not allowed to go back and tie up any loose ends at all once they check in on the mat.
I bet they would have needed to take race time, either right then when it was a safe bet the backpack would still be there, or once they had their next clue and were racing again, in which case who knows where the backpack would have been.
I honestly didn't see that partnership working anyway; both of them may have been from KY, but they were very different people and not having a chance to mesh before trying to get along in a high stress environment didn't help.
I like the cowboys, but their inattention to detail sure frustrates me sometimes! I can't quite decide how I feel about them asking the afghanimals for route info and then floating past them as their raft fell apart either. On one hand my competitive side says it's all game play so go for it if you can. On the other hand it's still early and burning bridges can backfire, especially when you don't always pay attention to detail. LOL