The shoulder crank isn't "bending the rules" though. Why would it be?
I've never understood why that technique or one like it would be controversial in any professional combat sport setting where the ruleset permitted its use. Honestly I might not even look entirely unfavorably on someone using it in a really high-level/competitive amateur setting. And I say this as a huge Glover fan who doesn't really like Jon or much of his fan club. Bones exploited Glover's lazy underhook to full effect and showed some great creativity on the fly in the process. Good on him.