I've said before that I agree with KMH and DOC and others that runaway ECU is the most likely cause or biggest contributor. That might also explain why these events happen in a number of circumstances. Thus, I'm not sure that this should mean that a dyno run would make it any more likely, except by introducing a bunch of extra stressors.
When my car was still quite new and totally stock I had a momentary total engine death with a short sharp sudden jolt and loud rattle while accelerating gently away from an intersection, at no more than 2500 - 3000rpm in 3rd. As quick as it had come it was gone and I regained mobility almost immediately. I've never had it since, and not since I had a programmed Standback, but that's not to say that there isn't a gremlin still lurking in the ECU over whose electronic integrity the Standback really has no control.
I remain intrigued by the huge volumes of oil reported pooling up in some cases. It may be that the oil is pumped around by flailing and perforated pistons in the final throes of catastrophic failure when new voids are opened up in the engine walls and pistons - most likely, I think. Or it may bring us back to arguments along the line of oil hydraulicking.....
CP_e Standback & PNP; CP_e 3" SS Downpipe; Corksport FMIC with Top-mount K&N filter & OEM Ram CAI; Turbosmart BOV; Dashhawk; Prosport Boost Guage; JBR solid shift bushes; DBA 4000 Wiper-Slot front rotors; Hawk Ferro-Carbon HPS Street front brake pads (@ 69,000km); Sumitomo HTRZIII's in 225/45 x 18