Hey Freddie-
The part number you have listed is the most current axle bolt fix so you got the correct hardware installed in your car and do not have to worry about this problem any more.
As for your assumed failure mode at high speed causing a crash, I believe there has only been one (of the many bolt failures) that occurred at any speed. 99% of failures have been reported during start from a standing stop. The car just fails to move when both inner bolts (the subject of the recall) fail, thus crash-and-burn from high speed failure is all media hype. Just doesn't happen.
EP had it "somewhat" right, the bolts were the problem (not the washer, and yes I know the "CC" kit washer looks so much different than the original oneS). The original internal hex bolts were electro-plated which with hardened steel promotes hydrogen embrittlement. A surface phenomon which causes micro cracks to develop which grow in fatigue until bolt area is compromised to a point it cannot withstand even the small loads imposed. The bolt then fails in shear. New kit has external hex head bolts from a domestic supplier without electro-plating. Bolt failures had nothing to do with how an owner "drove" his car (easy or hard).
The Ford kit also supplies the 6 (per side) torque-to-yield outer drive cup bolts which should be replaced as well. This is the recommended practice however, the bolts will not fail if used again in a pinch. The Accufab supplied drive cup bolts are not torqued beyond the material yield strength, which is OK as well just different than the TTY Ford specificies (and I agree) are better for this drive connection.
The Ford as well as the Accufab bolts solve the problem. End of this story.
Happy Motoring!