Glendale,
Thanks for sharing, I'm always interested in the techniques of others, not sure if going to full flaps in the situation you described would help or not due to the added drag, but when you are quickly running out of options what do you have to loose, as this accident and the Teterboro Challenger accident have demonstrated a late abort will result in a serious and possibly deadly overrun, although I am still highly suspicious that some other factor conspired against this unfortunate Gulfstream crew that prevented them from getting the aircraft stopped in time.
The Stab/Trim used on the legacy Gulfstreams while perhaps seeming unusual compared to other transport aircraft has proven to be highly dependable in over 40 years of use on the G2 through G5 models. The '650 now uses a fully trimable/adjustable stabilizer on its FBW system, time will tell if this proves to be as reliable.