It was temperary nerve damage that he suffered from the knee kick & so had he recognized that & took measures to stay safe a bit till it recovered, he wouldn't had made it worse by trying to go 100% on it while the nerve damage was still there. There's a great video out there of someone showing Mouse do that to Cejudo & you can see Cejudo's toes curl under just like O-Malley's did, but Cejudo recovered before making it worse. I'd say he's young & learned a great lesson, so he will be back & hopefully stronger than ever.
He learned a little something about manning up, staying calm, & leaving your pussy in the back room. I feel like he panicked when the kick made his foot stop working correctly, which led to him making it worse... & then basically gave up toward the end instead of maybe recognizing the problem & making it to the next round with crafty defense. Maybe his foot was too far gone at that point anyway though. No credit taken away from Cheetoe who clearly caused the problem, but O'Malley did make it a lot worse with that stumble. The kick itself would've recovered fairly quickly had O'Malley recognized what was happening. Live n Learn though... he's a smart kid & will be better for it.