a few things that stuck in my mind reading that were:
- It was on MJ's request to film the rehersals!
- MJ seemed to be in a happy energetic mood the day prior to his death.
Sure he might not have known he would be killed the next day...
And the part where there were one day MJ not seemed to be present (he was there but acted weird) sounds like a typicle version of, being extremly high (drugs) and then when the high sets off, lowers down, you tend to drift away, not being present. But it could just as easily him having alot on his mind, alot to think about.