The implication at the end of "Smokey and the Bandit" is that Dexter will end up being a lame, old man like the Tooth Fairy, without anything left besides the desire to kill and no physical ability to carry out the act. Then, Dexter drops his slides and they scatter over the ground, some broken and all in the wrong place. OK, fine, so Dexter in 30 years might have a bad life. But what does this have to do with the present? Looking at what's been going on this season, there's a clear answer: religion--more specifically, Christianity. If there was ever a dead end plot, it's forcing religion onto a character. I can't imagine anything remotely interesting the show can do with this idea.
The rest of "Smokey and the Bandit" is standard fare. LaGuerta is being a bitch yet again, Quinn is mad at Deb and getting back at her by hooking up with different women, and Ryan is revealed to be a possible psycho obsessed with the Ice Truck Killer. Either that or there's a black market out there for serial killer wares.