I only use jack stands with pins. I was able to get any ratcheting jack stand to "fall" while locked. They all do it without a load, some just more so. Peoples eyes get really big when I show them.
I'm curious how exactly you would do this. In any case, the load is what locks the stand in place. It's impossible to release a correctly built tooth and pawl jack stand without pulling up on the release lever, which in turn has to lift the entire toothed stalk and all the load on top of it to release.