The deal the Sons made with the cartel earlier in the season is definitely paying off in spades. The Sons always had a way out, even in the third season when they could fly over to Ireland and handle business. But now that they are deep in bed with the Galindo Cartel their window is as small as it can get. Galindo's enemies showed themselves perfectly capable of retaliating over the border, shooting and almost killing Alvarez. To add to that, Uncer's stalker note has everyone on edge, even if they don't believe it's related to the cartel business. There doesn't seem to be a good way out.
Whatever one may think of the Juice plot and the motivations behind how he got where he is now, he has actually done things he can't turn back from. He's killed Miles, and now Potter, through Roosevelt, has him by the throat. Juice killing himself would be a chilling and haunting ending for an episode which painted all the characters into a corner, but there is the distinct sound of a branch snapping as the episode fades away. Unless Kurt Sutter is pulling a double twist on us (which I actually wouldn't mind), Juice will be alive next week, albeit in a massive predicament.