Was there an obstruction in the top canopy area that may be causing this?

Were you moving the car (albeit slowly) or switching gears when this occurred?

I'm guessing disconnect the battery and reconnect after a few minutes. This will require you to "resynchronize" the top operation...at least two full top up/top down sequences should set everything back to normal.

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car