Nope I think. He wanted as far and fast away from there that he could.
And I believe he had a ride waiting for him, if he went through desert, it was only as far as to grab his stash and get to the prearranged meeting place.
And, I also think that's one reason why he hung around into the afternoon. I think his prearranged meeting time with his associate was sometime after 3 p.m. (after school). I totally believe he picked the escape day way in advance. I also think he finalized any loose-end details and coordinated his watch with his helper, between the time he got his computer back and the wiping of the hard drive at midnight, when it was all done.
In my opinion, there simply was no motivation for him to stick around any longer than absolutely necessary in his mind. When he walked out of the home at around 3 p.m., the plan was in motion, and no turning back.
Furthermore, I believe he looks totally different now-a "new" person. Outside of the facial blemish below his eye and the speech, I will bet no one would even know it was him if they walked past him. Macin will not be found unless he wants to be found. Sorry for getting long-winded. haha
Something else that was always curious to me was that Macin vanished exactly one year to the day from the posting of the "sorry video" from "Michelle." Probably just a weird coincidence...