Another opinion (lifted from a subie forum) that might have merit.....
"Like a lot of people I've never liked a fuel cut on aggressive turbo engines and I think the science backs me up there. From the video they found as much as a 1/3 of an injection worth of fuel just chillin' in a puddle in the intake runner. This puddle is kept liquid by the boost pressure and sheer amount of fuel. When the boost pressure drops (like when you lift the throttle) all of that fuel instantly evaporates in the low pressure air and is ingested by the engine giving natural deceleration enrichment (which is nice) but during a WOT rev limit hit where the fuel is cut I believe the fuel is also able to be evaporated into the dry air (which now is not saturated with fuel) and also ingested by the engine causing potentially lethal lean ignition events."
more detail here of the "Tau puddle"
http://www.ret-monitor.com/articles/...he-tau-factor/