Shivas,
I've had the yips...actually, after putting pretty well for about 20 years post-yipping I think I'm getting them again.
Back in my early-mid 20s I'd sometimes hit 15 greens in regulation and shoot 78-80.
Fortunately, my problem was as much technique as nerves and I've gone long stretches where I'm not happier to be 10 feet away than 3.
However, regarding the long putter, I have one question.
I'm not sure which tournament it was, but about 2 months ago VJ got to the 18th hole, or playoff hole...forget which one, but he had a 3 foot putt to keep the tournament going, or to win, forget which.
I saw that he had stopped using the long putter and I said to myself, "bet he misses".
Sho'nuff, didn't even hit the hole.
Do you think he would have made it with the long putter? I do.
Therein lies my philosophical problem with the device.