I've used vise-grips to take off pipe springs in the past. They work OK.
Was going to do some pipe swapping on a twin 2T awhile back..figured a spring tool would work a lot better in the considerably tighter situation of two pipes.
What a surprise. Crummy little piece of metal with a hook on it...and it works great!
I've decided that the vise-grip method is completely bogus!!

Below are both the T- and circular handles. I would have chosen the T if the shop had HAD one, but all they had was the round one. In the tight quarters I needed to get into, I was glad I didn't get the T.
