We are brewed a Belgian double last week. We did not realize that the gravity was high enough that we would need a different airlock set up. Needless to say, it fermented rapidly and on the third day the lid blew off. We got it cleaned up and the beer seemed to be bubbling away and happy in there. Is there anything we need to do to make sure it is not contaminated etc?
There was so much CO2 pushing out the chances of anything bad getting in is pretty slim. As long as you sanitized everything when you put things back together all should be good.
May I recommend a blow off tube for future batches;)
Plenty of breweries use open fermenters with no contamination issues. During the peak of fermentation there is generally enough CO2 blowing off to keep any contaminant-laden particles from landing in your brew. My bet is that you’ll be fine.