If you are using a push basic stroke.....practice straightening the right arm without the right wrist unbending. When I say practice it, I simply mean sit somewhere and practice bending and straightening the right arm without the right wrist unbending.
A spatial problem is probably the culprit of all yips....meaning the sighting systems of the body get confused and cause the hands to go places that you don't have control of. There is a field of study in this area and I am looking into it with a neuro-opthomologist.
I would stay away from "wild" concepts like a counter fall in the putting stroke. I find the only thing all that movement does is move low point around. I would also try different visual tricks, like looking at a spot in front of the ball, practicing with one eye closed, and practicing your hinge action with both eyes closed.
Dave Stockton: "On the Yips" -I never suffered from the yips,
although shoulder putters argue that I am highly susceptible
to them. The reason I don't get the yips is because I use a
putter with a lot of loft, which prompts me to forward press.
In other words, the yips are solely created by jumpy nerves,
which can be exaggerated by "hitting" the ball instead of
stroking it. Sometimes they caused by poor mechanics,
which are in turn the result of using the wrong kind of
equipment. Simple as that.
On the waggle: "I must emphasize that making a forward press
and then stopping defeats the purpose. You essentially end
up starting again from a standstill. Instead, think of the forward
press as the start of the backstroke."