Went back and watched a few more times. It's apparent that he threw his legs and hips to the right in an attempt to obstruct the other runner. Your legs don't flail laterally by that much when you are trying to lunge forward, it was obviously intentional. The only possible outcome of doing something like that is bad, which is why he is getting roasted for being a loser. The fact that he has tried to make excuses further proves that he is a loser.
Call it ramming, tripping, lunging, flailing...whatever you like. When you are next to metal railing and running sub 5 minute per mile pace, the person who can do something like this to their fellow competitor in a Turkey trot is someone with poor judgement at best and dangerous at worst.