KMS, because that is what real professionals do in this industry when anything even remotely connected to the operation of a helicopter makes them feel that they want to check something out. Nothing to do with what is required, or what is mandated, or what pprune Monday Quarterbacks might suggest. At the stage that it was removed from the beach there was, and as far as I am aware still is, only annecdotal evidence of that much abused acronym, LTE.
Most of the experienced pilots and investigators here would think is perfectly normal to truck a machine back to a proximate base after a precautionary landing. That is all part of risk management in the industry. Costs a bit more, but as the Old Saw says, if you think safety is expensive, try an accident.