Had no issues moving our Hallberg Rassy 53ft (25 tonnes) with the dinghy when we had an engine fault.
...BUT, sea-state was calm, no tides, no currents, light winds. And the dinghy didn't have a 'Christmas-cracker toy' Mapi 9.8 HP engine that half the charter fleets seem to use!
Sounds like you handled the situation the right way CDavis2. If anchor hadn't held it sounds like you wouldn't have had time to rig the dinghy before you were beached anyway.
