I get what you're saying, Dedalos, but... You know, I'd believe YOU would have a decent chance of judging the E-states, situation, etc., to know what the immediate deal was, and I think Phan would too.
I think what Phan's basic gripe here was one that we probably all have. You go down, blowing your E to try and help a guy, and then he does something that completely blows any chance you had at clearing him.
It's kinda like when someone's dragging a bunch of cons, sees you coming in, and then lazily turns INTO you. If he had the E to make that turn and stay fast enough to stay alive, he could have just kept going straight too, but, he didn't, and now the shot you were setting up has to be scrapped, and you have to move on to Plan B.