Dude, do NOT be afraid to go back and revise stuff quickly. It's what I do all the time. My philosophy is, the faster you fix a thing, the faster your readers have a better product on their hands.
Also, about the protest suggestion, I'm not entirely sure it would be best, considering that the comments the guy made had an impact on Jimmy near the end of the chapter. If you can find a way to incorporate the insults (more subtly, as I said) into the larger crowd, more power to you, but I feel as though even though the commentary on ignorant people was a little heavy-handed, the revelation about Jimmy's self-esteem is a good thing.
But do revise the bed thing. It just seems a little sketch-balls. Maybe it's because you have more of a background in shipping fics (yes I did check your started threads on your page), but just remember that Jimmy and Flannery aren't in a relationship. Yet.