I had the same thing happen to me. I was going to leave it dedicated, but later on decided to cut the tube off. I trimmed it as close as I could get with the scissors, then I took an xacto knife and slowly split the hose left on the airlock till it came off. But I would for sure try the hot water thing first. I have since then upgraded to a dedicated 1 inch blowoff and bucket lid.
Drinking Oaked Wee heavy, The Kaiser clone, Graff, , Sour Cranberry Ale
Carbing/Aging Westy 12 (2013),
In the bucket Chocolate stout, Westy 12 (new world)
On Deck Pumpkin Ale 2014, FBS clone, Port oaked amber, Old Rasputin Clone, 15% RIS