it's not just strawberry.. any/every wine has that same potential... nothing like coming home to a reddish foamy mess creaping across the floor. makes you wonder how a five gallon carboy can suddenly put out ten gallons of foam.... been there, done that.... got that purple stained t-shirt and pants. but i only had it happen once to me in over 35 years of wine making.... after that i always taste... no need to check SG if the must is still real sweet then you better worry. unlike some i always stir the must real good... not just punch down the cap but stir up the sludge and lees this seems to re-activate things when it seems to be slowing down....
if you've never experienced a flood of foam, then your awful lucky... it's not just the initial foam mess but it attractes all the pets that have to walk thru it and track it every where in the house... and cats are just the right height to get it on their belly good as they walk back and forth tasteing as they go.... then go and lay down in every chair or sofa in the house.... it wasn't the cats i wanted too kill but rather the wife/ now ex that talked me into really expensive!!!! white carpet thru out the house.
like every thing else in wine making i preach for you to take your time and don't be in a rush... a few extra days in the primary fermenter won't hurt anything.
mike