Before/after photos

Other before/after photos

Bad in the top half: three facial expressions (especially the bride's)
Good in the top half: the pose of the guy in the middle
Good in the bottom half: everything but the guy's pose--plus, the groom is doing a nice pose, too

Action: Keep all of the left half of the top photo (cutting halfway through bride's gown), and paste it on top of the stuff in the bottom half. That means the two folks on the left aren't looking right. With some good fortune, the heads from the good photo fit well enough onto the different-position bodies of the bad photo. With a little touch-up, the transplanted heads look just fine. Most important, the bride seems to be okay the whole debacle.