I've had this happen in several different Bulldogs, usually when going to the right. Recovery is normal and the engine usually starts easily in the dive-out (if slightly delayed to get the prop to windmill) or when the tit is pressed.
(An aside: I was in a theatrical costume store earlier today (don't ask!) and the lady suggested getting some "titty tape" ... apparently it's one of those secrets that the fairer sex normally keep to themselves
)
I once had the engine in a starter-less Jungmann stop dead at the top of a rather low stall turn over an empty but short airfield - I held the vertical until there was very little of it left but the engine only started to windmill when I pulled-out. It was all perfectly controlled but apparently the roaring and low pull-out from a silent vertical dive was rather impressive.
HFD
(edited to fix typos)