In the case of the 212.....the ECL (at the time) called for Land As Soon As Possible)
The PIC elected to fly to the first floating site suitable for landing ....at this point your well outside anything the checklist could possibly cover and just relieved to know your down.
As the tranny thrashes in its death-throes .....how to roll off the throttles was probobly the last thing on thier mind!