Lomaspaso,
Ehhh, no. ALL the fan blades were destorted from the midban snubber and outwards, but the inner 1/2 remained undisturbed, well nearly. There was no surge, and the yaw tendancy remained until power was reduced. The EPR only dropped for 1 to 2 seconds and then recovered, the Autothrottle was engaged and corrected accordingly. The JT9D unlike the CF6-50 does not have a CDP cutback tube mounted outside the fan casing, and all blades remained attached anyway, the N1 however decreased 9%.
I know all this because I was the poor unluck Engineer that ended up with a precasionary engine replacement down route.
Brgds
Doc