I'm just curious as to why you believe there has to be an official Boeing procedure for every contingency. What ever happened to simply flying the airplane?
Procedures and limitations already exist for intercepting the G/S from above: Use V/S, VNAV, or whatever else you have (like your air sense) to descend. Don't exceed 2000 FPM below 2000' AGL, or 1000 FPM below 1000' AGL. Be stable below 1000'. If not, go around.