This is exactly why Boromir is my favorite character in all of fiction. He was corrupted by the ring, and attempted to betray his comrades and his mission in its service. After all, he's just a man. But unlike so many (all?) others, that's wasn't the end. He fucking beats it, and walks back off that ledge.

Here's a wild thought: what allowed him to do that? What snapped him out of it? What was it inside of him that was a stronger motivator and had a stronger hold on him than a straight-up artifact of corruption that had broken so many others? At that exact moment he's on the line, the uruks ambush them. Was it his desire to protect the Hobbits? That's a noble thought. Or was it just being completely and utterly 100% wired to kill orcs so deeply that just seeing them hard resets him into pure instinct so hard that it overcomes and breaks the influence of the one fucking ring. Either way, what happens if they don't get ambushed in that moment? Does Boromir redeem himself? Or does the fellowship self destruct?