Ok, here are some repro steps;
1) Pedal the hat so that it rings.
2) While it's ringing, close it.
Expected: the ringing chokes immediately.
Observed: the sound rings again.
3) pedal the hat so that it rings.
4) close it & hold.
5) open cleanly.
6) close it & hold.
7) open cleanly.
close it & hold.
Expected: on 4,6,8 the DM10 chokes the hat sound.
Observed: on 4,6,8 the DM10 triggers a whole new hat splash sound.