He showed up because he was a) he was contractually obligated, and b) his "homies" was there (

) If they were real nikkaz, they would have told him not to come. Haitian Jack knew what he was doing by having Puff, Big, and Shawn Pen there, otherwise Pac wouldn't have come.
As far as street nikkaz, most of these street nikkaz is b*tches, that's why they so quick to snitch. "You ain't shyt without your homeboyz". Cause
pistols in a f*ckin' recording studio in Manhattan is lowkey

We are talking about "discipline", not a hit. If I just wanted to rob you and discipline you, that could be done broad daylight, or at your crib. This is the same Haitian Jack that supposedly was robbin' stash houses, robbin' dudes broad daylight, showin dudes people he kidnapped in the back of his trunk, etc. You do this kind of sneak sh*t on people on a) people you can't handle straight up, or b) you don't want the body to come back to you. Most nikkaz ain't tough without their guns or their homeboyz, rare is the one who can stand on his own.