I started up Primrose with the intention of gaining the summit ridge. However, when approaching the steep passages through the cliff bands that guard upper Primrose, I encountered sensitive cross-loaded wind slabs about 8-12 inches thick. They did not crack when stepped on gingerly (since I was approaching from below I didn't pound on them), but they did crack and slide easily when isolated or cut out. They didn't seem super sensitive, but in high consequence terrain and being alone, I opted to retreat and try a different route. I then headed around to the north, up Back of Bob's and Coyote Ridge, heading for 10233 again, thinking that the ridge would be free of drifts. Although I found wind deposited snow, it was not as deep and could be ascended safely. While ascending the ridge, I was treated to a view of several large wet slides off the usual paths on Robert's Horn and East Peak, right on schedule at noon. Once I reached the summit of 10233, I found some interesting evidence of recent natural slab avalanches on the high ridges, and most apropos, in upper Primrose, that confirmed for me that my decision to retreat was a good one. All of these avalanches appeared to be in wind deposition zones. Pictures below. S facing slopes, even at 10,000 feet, felt wet and unstable by noon. Since this is the first warm day at altitude, I would give steep upper elevation south facing slopes a few days to melt and freeze before testing them. In the meantime, N faces are still very stable and skiable. These N facing slopes will probably finally develop a zipper crust tonight, but it shouldn't be too bad and will become merely damp again by mid day tomorrow. Mid elevation south facing slopes are already in fine shape for corn skiing. The big question for accessing upper elevation terrain tomorrow will be the stability of the wind loaded gullies that I found. They will certainly heal quickly in the warm temps, and they are localized, and will not propagate beyond the wind deposited snow. A ride on one of these slides would be relatively benign unless it carried a person over a cliff (which is, of course, quite possible in Primrose). So I think that a competent party with high risk tolerance, observing strict travel protocols, could navigate them successfully (and by successfully, I mean they could "get away with it"). Personally, however, I'd give it another day.