Calling all Armchair Experts/Investigators!! Why not send Capt Sully a copy of the CAP 413: Radiotelephony Manual. Maybe he might learn something about proper RT procedures/flying/airmanship...
Seriously though, in an Emergency situation like this, crossing the t's and dotting the i's, isn't important. We leave that for the annual line check and 6 monthly sim. This was REAL WORLD folks........