but he reportedly had a return airline ticket to florida. imo he didn't plan the suicide, he changed his mind.
can't decide if he thought he was busted. the investigation wasn't looking promising on tuesday. LE had wasted a day on the wrong guy, while CV was on his way to kill NL. by tuesday, there was only a few blurry clips of a masked guy walking around, and an initially obscure reddit post. though maybe he remembered john was all over him and saw his car, and figured it was only a matter of time before LE found the car and it led back to him?
but i more suspect that after the murders, he didn't feel the way he thought he would. i assume the actual experience of committing murder is quite jarring and disturbing. and in this case, you also have a fantasy about revenge that gets replaced with some cold, hard realities. ..... also, it sounds like maybe the brown shooting didn't go according to plan. john messed him up and may have pushed it back to a different class 1-2 hours later. the students exited before he entered, possibly surprising him, hence the shooting starting in the hall. 2 deaths is probably a lot less than the number he fantasized about, with as many rounds as he brought. ........ also also, he might have been affected by a reaction from NL's daughter, who he apparently chose to spare.