Thanks for the suggestions... We've not had any issues with our landing gear operation prior to this (but the dual motor sounds like a nice upgrade.) We are going to let the insurance pay the dealer to fix, because there are more issues than just the leg. J-wrap was damaged from underneath by the SteadyFast bars when the landing gear broke. SteadyFast feet may be damaged and brackets may be bent. Trailer may have structural damage or axel damage, because we don't know how it moved over two feet (up and down? straight sideways?). I did notice the spray-foam around the legs in the front storage area looks disturbed.
As far as the pads go, those are 4x6X14 pressure-treated blocks, as recommended by SteadyFast to use under their 3 point feet. Two go side-by side under each foot. Because the surface of the storage facility is packed recycled asfault, any un-blocked legs will sink into it. In fact, the blocks can sink themselves over time. We just moved the trailer the day before, so the blocks had not sunk. My guess is the trailer was forcefully pushed off the blocks... and hard enough it ejected the broken snap pin two feet away... that's not a gentle wind or little "slip".
Yes, we discovered the break-in to the basement the day before. Is this the ideal location to store my trailer? Maybe not. But this is the best option we have. HOA says no trailers, and we could not fit it in our driveway if we wanted to.
I feel blessed that there wasn't more damage in either case.
Erika