I echo the comments above - it's just settling pressures internally. Just as a tip, I put my airlock on my brew buckets as soon as I close them up but I don't fill them with the vodka until they're in their final resting place. Otherwise you do get some pressure changes and such from moving around - you may even get some of it sucked back when moving such that you no longer have enough vodka/water in the airlock.
__________________ Primary: None Secondary None Bottled: Black IPA Kegged: Hefeweizen, Sweet Stout, Chimay Blue Clone On Deck: Rochefort 10 Clone
Yes. That must have been it. Cooled to 65. Took out of the ice bath and racked to carboy. Moved carboy to my cheap bucket/tub cooling system (carboy in a big tub with cold water and a towel wrapped around it). That's when I noticed the bubbles. They've stopped now. Got it settled in at 67 degrees