Ouch, bummer. if they are early enough,,, like said that Green Cleaner from Old Stage works great and doesn't leave alot of residue.. But when they are just about done,,, pick the bad spots and shove in a corner? If you have the room. Bummer bout the PM I seen alittle early in flower this time.. I'd been lacking on spraying of my plants as they come into flower. I did have to cull acouple. GL I hope you get a handle on it.. You can make a weak solution and use a little spray bottle to wash the infected leaf too before handling.
GL and Keepem Green
GL and Keepem Green