I must admit to being one of those who voiced concerns about engine FOD when we adopted the power back procedure, but I can't recall ever losing an engine to a power back FOD incident or stall.
A 747 pilot was telling me that one of his colleagues tried this and max EGT'd 3 (I recall) engines. From that time, he was known as the "6 million dollar man"... for those of you who can remember the TV series
Rgds.
NSEU