Frozen Pipe

In January 2014, we had a night or two at 16°F and had a pipe pull away from a fitting, but not actually freeze. This year we had a night or two around 10° . The weather started warming this morning and behold, in early afternoon there was the sound of  running water. The copper water line near the back porch faucet had suffered a small split, but the ice that had caused it also plugged it, until the ice melted.
I figured the plumbing profession would already have its hands full with people who needed them more urgently, so I slithered under the house and found the break was about where I expected. I went to the hardware store, got silicone tape and a pipe clamp and an insulation tube, crawled back under, and wrapped and wrapped and wrapped the leak, and then put more tape on. The first fews yards of tape didn't entirely seal it but got it down to a slow drip, and it's possible the rest of the tape may have staunched that as well. I'll need to have it "really fixed" at some point but in the meantime, we could turn our water back on with less than $10 materials and about an hour's worth of work.