1 thing i can note is you said you let them go 11 weeks from 12/12 flip? thats a bit long.the brown i saw looks to be the hairs and that can happen from many things.you need a scope to ck trichs don't just let them go to how ever long with out checking.looks like you let them go to long to me.but enviro factors can have a hand in this too.

also are the sucker leaves brown too? does the bud crumble into almost dust if you pinch it? could be bud rot or a really bad nute burn also.

also are there any seeds in it? also pollination will cause the hairs to turn like that too.