I've got whole truss of Black Cherries doing the same thing. They decided to start growing last night. This a.m. a couple small pea sized and several pinheads. The were sitting there looking healthy but naked ... seemed like a week.

There is a joint of sorts that you can see 1/4-1/2 inch above each blossom. Normal (?) blossom drop happens there.

Good Luck.

I am relieved to hear that, because my Cherokee Purples have about two dozen of these little BB sized maters now and I was afraid they were all toast! Hopefully they'll wake up soon.