just dont do it, the cons out weight the pro's of it 
there really isnt any risk of that. you are supposed to stall it out with the seafoam. same with many top-engine cleaners. BG top engine cleaner says the same thing.Dumbscout said:if you stall your car out with the seafoam you do run a chance of hydrolocking it, i would not recomend stalling it out.