OrcaFanboy
(Canon divergence AU, starts in the middle of Entry #83)
When the Hooded Man falls from the second floor, Tim decides to try to help. The fall wasn't from very high, so hopefully if he gets medical attention he can recover, right? While waiting for the ambulance to arrive, Tim decides he needs to know who this man is and takes off the mask. In hindsight, he feels he should have known it was Brian. Now he needs to hope and pray Brian survives so he's not as alone in this after Jay's death.
(Basically, in which Tim decides to call an ambulance instead of just taking the pills and bolting.)
~
This is basically my version of how Marble Hornets ends. When I watched Entry #83, the fall really didn't seem high enough to damage his body beyond repair, so Tim probably could have saved him. The way he fell was also favorable. He would have likely landed on his feet before falling on his back. His legs would have absorbed a fair bit of impact before fracturing, saving his torso from a lot of damage. He was probably knocked unconscious from hitting his head on the ground when he fell backward after landing on his feet. You know, because his legs were likely broken as hell. Also momentum, he'd have been knocked off balance. If Tim had just called a freaking ambulance --
(Note: I posted this on AO3 first, by the way. I just wanted to spread it across platforms.)