DO NOT. DO NOT. DO NOT be opening up those buds in the growspace. If you open them up that will release mould spores throughout the whole grow space. If you decide to keep the rest going and remove those affected buds, CAREFULLY and I mean VERY FUCKIN CAREFULLY place a plastic bag over the bud and seal it. Then cut the stem below the bag. Then remove the bud, still sealed in the bag, from your grow space. This will reduce the spores spreading.
The mould has most likely developed where the leaf meets the stem. The leaf junction has been damaged, the damage has allowed the stem to weep inside of the bud, where the air flow is nil and that moisture has allowed the mould to flourish inside.
I do agree with Indy, clip on fans maybe OK for circulation BUT you NEED to get rid of that moisture from the entire growspace. The clip ons are only going to recirculate that high humidity air, ya need to piss it off out of you space entirely.