There are a thousand and one questions and answers, on as many different websites, if your pedals, cranks, or any other part is stuck are stuck. What I cannot find, is advice for my having gotten my 15mm open ended wrench STUCK - pinched between the crank arm and the pedal spindle. It's on the flattened parallel sides, where it belongs, and it has not rotated at all, so it's not stripping and rounding off that crisp edge. Rather, what has happened is that as the threads screwed in, the area of the flattened surfaces got narrower until a surprise squeak alerted me of the problem. Already, I've learned the lesson of why pedal wrenches are made so thin! I'll never use a thick headed Craftsman for this application again, I promise. Now to simply remove it. Well, I don't want to break anything, and already attempted as much brute force as I feel comfortable with. Hence, here I am asking this question. Guesses and speculation: please hold your typing tongue for a bit, and hopefully someone had dealt with this exact situation before!
I've added a photo, although it is as difficult to show as it is to explain without making myself look crazy, weak, stupid, or all of the above. In the pic, the pedal (right pedal) is on the left side of the picture, and the crank arm is on the right. The arrow accents where I believe the problem is. This is where the flattened, parallel, 'wrenchable' surfaces of the pedal spindle transition into the full, round, uncut shape of the spindle. It transitions with a smooth curve, not an abrupt line. As the spindle tightened, its thread pulled itself into the female thread on the crank arm, squeezing the wrench in between with a surprising amount of torque, I guess. I'm looking right at it and it still seems implausible that it cannot be pulled right off, or turned counterclockwise and loosen. Thanks for any creative ideas to try before resorting to a breaker bar technology.