Has anyone dealt with a story situation where a PC might be able to suddenly access a Force Power they haven't already trained? I'm thinking perhaps it's not well controlled because the player is under duress, and that power suddenly manifests. As an example, in Star Wars Rebels when Ezra calls a massive Force Push out of nowhere to throw a baddie against a wall, to keep him from killing his friend.
I don't see any RAW, or even RAI, to support this idea. From a house rule perspective, I could see a GM setting up a situation where a PC could spend a Destiny Point, take some strain, and then gain temporary access to some Force Power of his choice that fit the scene. Has anyone experimented with something like this?