Here's the situation: The thrower accidentally lets go of the disc. He did not intend to throw it. He takes a couple steps to his left and catches the disc. The disc did not contact anyone in between.
I believe Rule XII.B. applies here and specifically this sentence:
"If the thrower regains possession of an accidentally dropped disc before it contacts the ground without another player touching the disc, that possession is considered continuous."
So, I understand that the thrower is allowed to retain possession since this was not an intentionally thrown disc. But here's the question: Are you allowed to call Travel since the thrower has moved their pivot during a continuous possession?
Accidentally dropped and caught disc.