Don't worry about it. The fermenting beer kept pushing out CO2 keeping positive pressure on the fermenter so I wouldn't worry about anything. Just fill the airlock with cheap vodka or sanitizer and RDWHAHB.
Cellar Door Brewery
Primary: Smoked Porter
Secondary: Flanders Red 2010
Kegged: 10.10.10, Robust Porter, American IPA
"Without algae, there would be no life on earth, the seas would be sterile and the land would be uncolonized."
-Sir David Attenborough