dabac

Keep in mind that the force that can be generated while braking on a good surface is considerable. In the early days of road-going disc brake bikes there were incidents of bent forks as well as buckled down tubes.
One of the events I witnessed, half the caliper side dropout of a Marzocchi Bomber simply broke off.
Also remember that there's a sneaky unscrewing action going on here. Depending on how much the acorn manage to unscrew, and the exact configuration of the mating surfaces, the fit might get sloppy enough for the acorn/skewer base simply to tilt a little and then slide over the lawyer lip(s).
If there's force enough available to split a dropout, there's probably enough force to stretch a skewer too.