Fryguy...The intent of the caution your talking about is to prevent 'undue' stress on the individual tracks/shelf brackets because the strut supporting structure is stronger when the two gears are connected. The Herk landing gear achilles heel has always been side stresses - its engineered to withstand really hard landings, but the oversize wheels really has tremendous leverage on the supporting structure when turning/maneuvering. While there could be movement from people working on top, your just not going to have the same stresses as moving the airplane.
Chock the individual tires (F & and if management is still concerned, come up with a splint, as HercMX was talking about. Management is overreacting in this situation. Good luck!