After everybody's gone, Jayne sees all the drugs and suggests that it's their biggest take ever, as he slides open one of the doors to their secret holds in the side of the bay. Mal says that Simon had a good idea and has a "decent criminal mind." Jayne walks over to where Mal is working to ask him what he's buying with his cut. Suddenly Mal spins around and whacks Jayne across the head with a huge wrench, knocking him clean out. Uh-oh. This love triangle has come to a head. Heh heh. "Head."
We see a lovely CGI shot of Serenity taking off from the planet's surface. Jayne comes to, slowly realizing what's going on. There's a communicator on the floor. He appears to be in the corridor that leads from the cargo bay to off-ship. He yells out, asking Mal what he's doing. There's a knock at the window of the sealed door, and we can see Mal's hand holding a communicator. Mal tells him it's time for a little chat. Both Mal and Jayne lunge for a panel of buttons next to the door. Mal seems to win, or perhaps he's disabled the buttons on Jayne's side. Mal presses a button, causing the outside door to open. They haven't left Ariel's atmosphere yet, though, so it just causes some nasty winds to blow at Jayne. For now.
Mal explains to Jayne that that he knew they had a solid plan, but couldn't figure out what Jayne was doing going out the back door instead of going out the way they came in. Jayne insists that they couldn't go back the way they came. Mal accuses Jayne of calling in the Alliance. Jayne points out that he got pinched, too. Mal points out, "That's what happens when you call the feds." Jayne continues to profess his innocence, demanding that God strike him down where he's standing if he's lying. Mal says that Jayne won't be standing there for long; once they leave Ariel's atmosphere, Jayne will get sucked out into space and die. Jayne begs Mal not to kill him that way: "You want to kill me, shoot me! Just let me in." Mal explains that they used to keelhaul traitors back in the day, but this as close as he can get on his spaceship. Jayne finally relents and admits his guilt in the hopes of changing Mal's mind. He says that money was too good to resist and apologizes several times, begging Mal to "be reasonable." He says that it wasn't like he ratted Mal out to the feds. Mal angrily insists that he did: "You turn on any of my crew, you turn on me! But since that's a concept you can't seem to wrap your head around, then you got no place here. You did it to me, Jayne, and that's a fact."