Surprisingly Stable Snow in Upper Hyalite

Skied up through Maid of the Mist Basin into Twin Falls Basin, attempted to boot up the Pinner but was foiled by too much snow. Very strong (almost blew one of my skis away) wind on ridge lines transporting significant amounts of snow. Despite this snow seemed very stable, small wind/storm slab not very consolidated breaking, but not propagating. Skied all sorts of aspects and all angles and saw few signs of instability. Day before friend observed 6-8ft shooting cracks when walking across >30 degree north-eastern aspects near try line, will try to get him to submit video, skied same slope and was unable to replicate a day later. Absurdly deep conditions high up in Hyalite, some of the better turns of my life, hopeful the storm bonds well with previous snow.