I'm glad to hear that you're OK. Impressive that it's all on video, but in the first one, I was somewhat surprised that you passed the truck & trailer on his right; bear in mind that he's turning left, which means there's no way in hell that he can see anything near the right side of his trailer once he has started the turn, so you're absolutely in his blind spot
In the second video, I think you should have waited; rarely will I sneak up on the inside, and only when there's ample room on the shoulder, and when the shoulder doesn't narrow ahead. I'm sorry to have to say this, but I think you were totally wrong, and that you were lucky it wasn't worse. I must say though, that I respect you tremendously for having the balls to post your experiences here, so that at least some others of us may learn from your experience.
- Wil