According to a person's JH trail guide, from the top of the gondola, Sundance is usually groomed, popular so, and is not below the lift. Sundog is below the Casper Bowl HS Quad where bump skiers like to show off, so one would expect moguls even at a modest 34% grade. There is a youtube snowboarder video going down that which despite the wide angle lens effect, looks similar to what such a lower gradient mogul field video would look like. Not a slope one could slide very far even if trying.
Per the Texas story link. After the binding flying off statement, the following line reads like what some lawyer that has never skied and can't analyze topo maps might write simply for legal embellishment:
"...Finally, her right ski tore off and the moguls, or bumps, of the next run stopped her 300- to 400-foot descent, the suit says."
Since the man was well down the slope, he would not have climbed back up to attend to his partner. Rather, since it was near the lift top terminal, the employee there would have been alerted by the next group off the lift that would call ski patrol. First question would be, did ski patrol actually find and recover the supposed disconnected binding piece? And if so did JH patrol and the rental shop inspect it and the ski? If the binding screws ripped out off the ski, it would be obvious looking at the ski binding holes alone. They would also be able to modestly evaluate the state of the woman's injuries that for legal reasons a resort will always have patrol do so carefully. Unfortunately beyond this amusing for this web audience mystery speculation, due to the way lawyers work and think, none of this is will become public information until they are in front of a judge. And more likely if the shop is somewhat to blame, it would be obvious and they will quietly settle out of court so none of us will ever really know.