Yes, that's possibly a Mooney story I believe to be true, although I remember it happening in Texas. Unless the Nebraska incident is yet another.
The way the Texas story is remembered was the pilot was alone flying VFR, and decided to fly beneath a building thunderstorm. Back in the 1960's and early 1970's all metal Mooneys came from the factory with a dirt simple vacuum powered wing leveler named "PC" for Positive Control, which was on all the time. You had to press a little thumb plunger on top of the left horn of the control wheel to disengage it, which lightened the aileron forces for more nimble turning, if you desired. As soon as you removed your thumb it was back on.
The plane got sucked up into the storm and the turbulence was so bad the seat came off its tracks and the pilot, still strapped in was thrown around the cabin. At around 13,000' he was spit out of the side of the storm into clear air. He unbuckled from the seat, positioned himself on his knees, found an airport and landed. I'd imagine the PC wing leveler had something to do with his survival.
The Mooney was totaled, complete with bent wings and popped rivets. The pilot was hospitalized with back and neck injuries.
Sometimes I feel a little paranoid admitting that one of the airframe features drawing me to stick with Mooneys (flying the third one) was the well earned reputation of them being very hard to break.