I think that should make most of TC owners taking closer look at their jacks.
We don't have very strong winds where we leave, but very often I take our 4500-5000lb camper off the truck on slopes and with my commercial dually I have to lift it to the top stops to unload.
Never had dilemma if that thing might tip over. With center of gravity up front, quite few times I had one of rear jacks few inches above the ground, yet the camper was rock solid on the jacks.
Maybe it is dually brackets, maybe jacks quality, but we used our camper in lifted position on jacks only and never felt unsecured.