I think you will be fine, It sounds like you have a pretty active fermentation going and its producing lots of Co2, and I would think that will provide enough security for such a short time the lock was blown off.
If you're trying to ferment 5 gallons of wine in a 5 gallon carboy, that will happen alot until the fermentation settles down. Do the kit instructions tell you to airlock it right away like that? Most kits just have you cover it with a clean towel for the first 5 days or so, until it slows down a bit.
__________________ Broken Leg Brewery Giving beer a leg to stand on since 2006