A bjj brown belt friend of mine, that's also a cop, told me that they train a variation of the armbar instead of the traditional one, to avoid being bitten. If I remember well it is the one where you do a triangle with your legs trapping the arm you are attacking.
If biting is OK, so is putting your fist down someone's throat.
Anything goes, right?...
Idiots who can't differentiate between training and combat are dangerous.
Similar situation happened at our place. A 115 lb girl caught 170 lb plus guy in a guillotine off her back and he bit her out of "panic" , ******. Should have got his head stomped.
But I guess they get lectured a lot about how much force to use. The problem probably is that not hurting is not always an option.
Anyways, most cops here train absolutely nothing and would not even run to chase a criminal if needed. My friend training bjj is an anomaly, there's no regular training required from them, so probably no clear rules about which fighting techniques to apply or not.
Even then, I'd definitely choose a strangle first. A busted elbow isn't necessarily going to stop someone. But I'd take it if I had no other choice, understanding that there's a good chance the fight will continue afterwards.
I'm surprised cops aren't training BJJ in Brazil of all places!
Each state has it's own cops and each program is different. The guy I'm talking about is from Minas Gerais state. He told me that what they teach is almost only bjj based, but the cops aren't required to have a schedule of regular training. It's mostly weekend courses they take.
Another friend of mine from Sao Paulo state is from ROTA, a badass elite force in that state. We used to train bjj in the same place while I was a blue belt and he was white. He had no bjj training from his job, all he knew he was learning in the gym. He did bjj because he liked it, but in his job he told me he used his gun. But ROTA are the guys called when things are ugly, they don't go easy and don't ask questions, just get the job done. I don't know if things have changed since then (6 years ago).
At least the elite forces of Rio de Janeiro (BOPE) seem to be into more bjj, but I don't personally know anybody from there.
I seemed to remember this guy from ROTA telling me they taught Aikido there, but I wasn't sure. Then I did a research and discovered an article from 2009 telling that they practice Hakushin Ryu Taijutsu. The article also say it uses acupuncture points of pressure. Well, there you have it. I think my friend cop from the other state is way better. The points of pressure fighting is much more likely to cause damage than the armbars; damage to the cops, that is. Who needs biting when you have points of pressure???
You see, Brazil has as much bullshido as any place.
Ditto, I have a mate who's with the AFP here in ACT and he said "yeah I've actually been thinking I should take up BJJ" (having been to a lesson at our club once before). Ideally he would just like to have that 'control' over someone and not necessarily go out and start choking people out.
I was hearing some of the **** he has to deal with and I said "dude do Judo, Jits, Wrestling ... SOMETHING". Didn't realise how wild some of the locals our down here.
Back to the initial OP and in addition to Hedgehockeys post, I seriously can't believe both those things happened, and I gotta tell you if I were in either case I probably wouldn't have handled it as calmly as you both. Maybe I wouldn't have completely broken the guys arm, but I would have at least gone as hard as hearing the first (of many) 'pop' sounds when arms extend.
People like that deserve all the injuries they get.