This is supremely frustrating. I knew it was going to be frustrating before I clicked, but it was even more frustrating than I had anticipated.
the difficulty here is the local chapter didn't announce they expelled him publicly, and expulsion from a local chapter also isn't expulsion from the organization as a whole (which had been referred to the NPC, the body that runs the organization as a whole day-to-day, but hadn't been acted upon). so, nobody is actually lying here. the chapter did expel him, but Thanedar did also leave DSA before the organization told him to kick rocks.