Well, I can't be certain every calyx on that thing is pollinated. You'd have to wait to watch them all pop open, squeeze them to see if they're hard, etc.
The buds won't be forming on that plant at all. The way the calyx formed, I'm pretty sure that's what it's going to look like in the end, with more swelling of each individual calyx. Maybe each one of them looking like an individual foxtail. However, of its seeded, don't plan on more than it focusing on procuring the seeds. The time line will be extended a little while it diverts energy into seed production.
There's not much risk to the other two of there aren't male flower or nanners on it. So, you could just let it ride out.
If that plant looks like that, then it will pass on those genes to the seeds in its offspring. Some of the offspring will carry that gene. There's a good chance that you'd plant that bean and it looks like a normal gorilla turd though. So, hope isn't lost. The good news is that you might have plenty of beans to be able to plant a few and then toss the ones that look like they're growing funny.
I wrote all that and then I read your last sentence about self pollination. Maybe when I initially read this thread and this morning I was too tired to notice, but I thought another plant hermed and pollinated this gorilla turd. If that's the case, you should be ok with the seeds. If it self pollinated, your chances of normal seeds just went down a little because it just doubled up on the 'turd looking' trait, of you will.
Hope that makes sense as I just woke up