Stans has it. The trick is that you strike the grip frame on the same side as the sideplate so that the inertia of the plate lifts it from the frame or, if you wish, allows the frame to drop out from under the sideplate. Jerry Kuhnhausen, in his book on S&W revolvers, suggests holding a thumb over the sideplate while striking the frame so the sideplate does not drop to the bench or floor and ding its edge. Prolly good advice for the Taurus, too.