In regards to the set up; Pac pointed
Pac never really accused Jack of setting him up for the shooting; that was Jimmy Henchman, and that has been all but proven.
Pac accused him of being an informant, which is how he walked on the sexual misconduct charges. And to your point...
... it still seems pretty likely. Haitian Jack strikes me as the type to work the streets and be an informant as a cost of doing business or a strategy to get ahead and take out his competition.
Yeah, it just feels like everything about his current situation and the way he talks points to that. All but any solid evidence. He clearly acts like someone you wouldn't want to trust or get involved with.
I mean, the silliest thing to consider is.. how does one even leave the States with such history? At that time even if you're just under investigation, you probably wouldn't be allowed to leave the country. I remember reading that 2pac wasn't allowed to leave the country, and had to get a special permission of some sort to go to Italy for a few days.
Haitian Jack at the time was apparently known as an NY mob kingpin, generally known for running a robbery ring in his early years, amongst many other things, yet didn't spend much time in jail. Checking his history, he was jailed in 2004 for shooting somebody, yet less than 3 years later he was "deported" to Haiti, where he's living large? It all seems way too fishy.