Skinned up phantom and skied Crooked Couloir first, noticing only two isolated pockets of wind-loaded snow. We then started skinning then booting up Slot Couloir. I noticed 2-6" of wind-loaded snow while booting. I could tell it was wind slabby but we decided to proceed as it seemed isolated and didn't notice any shooting cracks. We did notice active wind loading of the slope. Of course in retrospect, proceeding at this point was a mistake. We reached the top of Snot. First skier skied down without triggering any slab but I ended up triggering a 5-6" slab under my skis at 5500' that ran down ~300'. It caught one snowboarder booting up our bootpack and they slid down ~100-150' in it, but they were not buried and not hurt.