Oh, here's Raylan showing up to Boyd's bar, and Ava greets him with a somewhat faux-sunny smile and an undercurrent that only exists between former lovers. Ava also isn't surprised to see him, but that's only because Boyd is about to be led away in handcuffs -- by Deputy Enforcer. Possibly a little convenient that he didn't just kill Boyd and Ava both, especially with Johnny safely out of the way and Colton apparently nowhere to be found, but I could see Wynn wanting to laugh in Boyd's face before the end. Boyd wonders why Raylan is there if he's having Shelby haul him in again, so I guess he still thinks of Shelby as a man who only takes orders, but Raylan tells him he wasn't even responsible the first time before asking what's going on. Deputy Enforcer tries to play along with the idea that Shelby sent him, but Raylan's confused, as he just saw him not fifteen minutes earlier and he didn't mention anything. Raylan and Deputy Enforcer start to get into it, but Raylan HILARIOUSLY puts a pin in that discussion to note the huge rock on Ava's finger, and whether consciously or not I'm pretty sure she was waving it in his direction this whole time, which only adds to the humor.
This scene is impossible to do justice to, but it's genius from stem to stern, even staying funny through the upcoming bloody part. For, you see, after the wedding discussion is concluded (Boyd assures Raylan that he's still going to be invited even with their relationship in a trough right now), Deputy Enforcer tells Raylan that he's going to need him to step aside, and the "Ohhhhh, girl" look on Ava's face as Raylan asks for confirmation that DE gave him an order is a treasure to behold. DE replies that if Raylan doesn't move, he's going to shoot him, and in an episode with a lot of people making their last mistakes, here's another to add to the list, as this is all the confirmation Raylan needs that this guy isn't who he claims to be, and he outdraws him and shoots him dead. The hilarious part is Ava and Boyd both yelling and moving simultaneously -- Ava hollows out to avoid any stray bullets, while Boyd's expression loses its usual unflappability to the nth degree as he shoulder-rolls out of the way. The direction, coverage, and acting make a two-second part of the scene alone worth the price of admission here. I should also note, in a nod to how pro they are, that both Ava and Boyd instinctively reached for their own weapons before the shooting started, although they probably would never outdraw Raylan even if he hadn't had a head start.