Dang I'm blind..... was looking at the leaf damage and didn't see the obvious buds and you even said it had flowers.... Anyhow, yea it will spread to others if it hasn't already. Is it the only one that has bug damage? Are the plants huddled together and touching one another ? Probably not a lot you can do at this point. You could remove the worst leaves put up some yellow or blue sticky traps maybe some nematodes and or cucumeris if you can get em. Could probably still spray w met52 but idk I'd probably just ride it out at this stage. It looks pretty advanced and anything you spray will remain on and inside of buds. Idk about you but I'd rather smoke a lil bug poop than pesticides. Bummer dude.... At least now you know for next time.... Get rid of any and all pests in veg even if you don't see anything. Preventative sprays w the least harmful pesticides is the way to go, then maybe some predator bugs to keep the little pricks at bay. Good luck