hesitate, studder .... repeat
Not sure how to describe it but not well is the short answer. As mentioned above it hesitates and/or studders, like it's not completely cycling or missing a cylinder. Rough/jumpy acceleration, does that make sense?
Once it cuts off, it's off. I feathered the throttle after it 'died' and that made a SLIGHT difference but more along the lines of raw fuel being forced in and the combustion cycle not wanting to be stopped. Don't forget this is a manual transmission system.
Check for an air boot or vacuum hose that fell off. Otherwise, could be a fuel problem, but I don't have a lot to go off.
If I could get my hands on it, that's a different story...