Watched this progress from 18:00 hrs. so this is what i heard and know. China Eastren flight taxing onto hotel (H) took the turn a little to sharp and got its main wheels stuck in the grass. It was soon determined that the plane was too heavy to tow out loaded so the passengers,Cargo,and luggage were unloaded. from that time YVRAA (i think) was fortifying the ground to pull the plane and at about 22:00 the plane was moved to the south Air Canada hangar.