Propagating Cracks in the Corral

Skied mellow ~20-25 degree slopes on skiers left side of corral. Ski quality excellent. Took one ~25 degree line further east/skiers right - as one skier stepped off skin track at transition zone, felt huge whumpf. On skin back up noted large crack which propagated ~150-200m across slope towards skin track. Did not trigger a slide initially despite crossing a small wind lip, later noted small 0.5 slab over this wind lip.