you gotta think that JH was asked if he minded going after staff members. I can't see Durkin pulling that. Jim probably said yes after talking it over with his staff. JIM was probably reassured that his guys were solid and told Durkin to go for it.
I don't see anything wrong this. it's a business.
Now... come after harbaugh and we're fighting
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Sometimes people standing on third base think they hit a triple, but they didn't - Jim Harbaugh