glad it was no big deal for the fish. when i moved recently i could not remove one of my bristlenose plecos from his cave in a very large (3+ ft) piece of wood. so i filled his cave with water (probably 2-3 cups), set the wood securely in the back of the moving truck, and hit the road. he was in there 4 hours and the water went down to maybe 55 degrees - it was the beginning of december. once the wood was back in the tank and the tank was filled up, he swam right out, no problems.
i had another one that lived in a wet-dry sump filter for three days. it was not under water, just living off the trickle of water that came down through the bio-balls. still have him.