The fact that the clock didn't start until after the ball left his hand is pretty irrelevant. The clock is operated by a human with human reaction times and they aren't expected to get it right on. The call doesn't really hinge on that.
If King of Nowhere's analysis is correct, then it took roughly 0.35 seconds to get the shot off. That's not really enough to have a conclusive case (I'd say it's within the margin of error). Of course, with proper cameras and analysis I'm sure you could get an exact number. Anything over 0.4 would be conclusive in my opinion.
But of course, the fact that the rotation of the ball changes is the real kicker. Any camera angle that shows that really proves that the shot should not have counted.
I'm not so sure that such evidence would matter though. Usually in games like this, if a referee makes a decision, even a wrong one, it stands as part of the game. The errors here are referee decisions (they missed the tipped ball, they missed the time the ball was in Lee's hands, and they missed overturning either call on review). None of these are clock malfunctions or something else that I would expect would lead to the call being changed, even with overwhelming evidence that the call was wrong.
The only real hope is that because it's the last play of the game, you can change the call, but I'm pessimistic that that would matter. It seems more likely that they will apologize that the refs made a mistake but not actually change the outcome even if clear evidence is presented.