I found some interesting recovery options with the lance on battlefield, and I don't mean pinning the platforms.
Go beneath the stage, and get as close to the underside of the stage as you can, then lance into the stage. You are only able to pin the stage if you are very close to it.
Once you've pinned the stage, a few things can happen:
- You may snap the ledge immediately. (Being in a certain position near the ledge seems to cancel the pin animation)
- You might hang just below the ledge until you make an input, then instantly snap the ledge as soon as you leave the pin animation.
- Pin may cancel right away and you will just be in free-fall.
- You can pin the stage such that jumping out of the pin will cause you to hit the stage like a ceiling.
This is by no means an exhaustive list, there's really an amazing number of interactions between the pin mechanic and under-stage geometry, and the behavior changes a lot between stage (FD has some fun tricks as well, but battlefield seems to have the most interesting reactions because the geometry around the ledges is so different). It's hard to say for sure if of these interactions will actually be useful, but it seems likely that at least of few will be reasonable recovery mixups, or good ways to get back to the ledge after teching against the stage.
I'm not equipped to take screenshots or videos, so hopefully someone else can get examples of some of the interactions up to better illustrate the various interactions.