here's the ops controllers view on this-
It is not for an ops controller to tell a captain what to do in any non-normal situation. we will offer help, be the liaison between specialist and crew and even ensure that whatever course of action the captain decides is communicated to the appropriate entity.
Ops blokes are there to ensure that programme disruption is minmised, not to tell a pilot what to do.
Passenger welfare and commercial considerations came after safety