Not sure if it's true, sure looks like it could be.
Here is some interesting history on JMC/Prodyne in an excerpt from an recent email from
My good friend Larry Barker that made the Prodynes had a welding shop next to my bike shop. When I decided to make the JMCs he designed the welding jigs and was my first welder. He was the best welder in the world. Larry and Harry Leary designed the Prodyne. You can see why it had a lot of JMC in it. To me it was a peice of art. Much better then the JMC. I don't think Larry ever made a Prodyne fork. He made handlebars. We did make one 26" JMC prototype fork and had our 26" prototype frame almost finished when we closed the doors. I sold the fork and some other frames to a guy in Washington. I noticed the fork sold on ebay a couple years ago for 800.00. I think Jeff Haney got it. The reason I like the idea of using the JMC/BMX on the chain stays is that was our first frame decal and Larry was our first welder. The blue on clear was our first JMC Racing frame decal. ........ .............. Larry hang hiself in his welding shop about five years ago. I had just went out and visted him the year before. It was sure a shock