I will say shook off and turning loose are two very different things!
Good point.
I look at it like this... imagine a professional boxer that's used to gettin' his face knocked in for yrs and yrs... then one day somebody walks up behind him whilst he's in a fight and hamstrings him with a razor blade...
"Why'd he stop boxing?



??" ..... "he's a fighter... he should have kept fighting" the crowd said...

"new sensation"? .... takes time for most creatures to learn to tolerate pain from unexpected angles...