We were a group of 4 planning to jump Petit Dent de Morcles. We staged a car in the LZ at 730 and got on the first chairlift at 830. A few days prior we hiked and jumped Dent de Morcles, an approach which took 2h17. Petit Dent took 3h25 because a couple climbing sections towards the end took us longer than expected to downclimb safely. During the approach the winds seemed pretty strong, but they were also a little strong on our previous Dent jump and conditions then were great when we got there, so we kept going.
We arrived to the exit around 1215 to a strong left to right crosswind. I took a few laser profiles and during that time we noticed one or two lulls, so we decided to gear up and wait for up to an hour to see if conditions improved enough to jump. The difficulty of the downclimb was a contributing factor to our decision to wait for lulls - had it been a simpler approach I personally would have been more inclined to go back down.
While lasering, I found that the path of least resistance was to fly the gully about 20 degrees jumper's left. The gully straight ahead also went but was a shorter start with a noticeable ledge to clear. I expressed my concern that since the wind was also coming from the left, there was the possibility of being pushed from the bigger gully towards the shorter one in the start arc.
The exit is on a ledge that offers a fairly wide range of push directions, so I positioned myself on a nice push platform towards the left and aimed about 30-40 degrees left which had me pushing into more of a headwind. As soon as I felt a lull I pushed off and jumped, staying high in flight and landing safely. Conditions were a little bumpy during the flight but not that bad, and ground winds were medium but consistent.

Within a minute or so of landing I got a call from the other jumpers up top, who said that Logan had gone in. After reviewing the video I saw that instead of pushing from the same spot Logan had opted to go from one on the right side pushing straight out, which made him more vulnerable to the crosswind/quartering tail and over a more demanding terrain profile. It seemed like as Logan positioned himself on his exit platform he was already in go mode, exiting without gauging what the wind was doing in the moment. He exited with his arm wings already outstretched and immediately started getting rolled from the crosswind. By 2-3s he was completely on his side and still rotating, at which point he disappeared from view and impacted at about 6s. The two jumpers still on exit immediately called Rega to begin the recovery.
Unlike in similar previous fatalities, Logan's fatality doesn't appear to have been the result of a bad exit made worse by conditions. Aside from not knowing to close his arm wing / stay relaxed for the first second or two after exit in a crosswind, his exit appeared to be normal.

In the attached image the red line is the path of least resistance and the blue is the shorter start.

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