Got 'em. Started around 10 years ago on the first green of a tournament round, and have been sort of a constant companion ever since. Shot a 81 with 40 putts, and the rest is history.
Curable? I think so, but in a qualified sense. If you have a full-blown case of the yips, my very personal opinion is that you won't ever putt successfully in a conventional manner again, at least in any sort of competition. Whether that means long/belly putter, claw grip, etc., it probably means some major change will have to happen. The scar tissue is too intense. I don't know who it was, but somebody said, "Once you've had 'em, you've got 'em!" I know that sounds pessimistic, but that has been my experience for sure.
LOTS of people tell you that it is just a mental thing and that you can practice/technique your way out of it putting conventionally. I have not found that to be the case, nor has it been true for other yippers that I have known. I always suspect that those people are talking about terrible putting, and not the real thing. I was a good (not great) putter with a solid stroke that held up well under pressure until it didn't anymore.
For me, the answer has been the wishbone grip with my thumbs side by side on top of the very oversized putter grip. I am still perfectly capable of yipping a putt, but when I do it still goes straight. I've been doing that for three years now, and have found it to be much better than other methods.
Good luck; don't let it ruin the game for you.