OK, the only way out will be to pull the gun completely down and pull the grip frame (trigger guard and grip) down and back from the upper frame. That means driving out the hammer pin and easing the hammer back so the grip frame can come clear. Ordinarily, the link pivot pin keeps the front from coming down but if it is all the way back the grip frame should come off.
Usually the link pivot pin will come out if you just rap the end of the barrel hard, but if it doesn't, the above is the "plan b".
Jim
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