Vigil and Durmand Priory Storyline
When you accept another player’s storyline, you are automatically placed on that story track so you can continue to share instances. Once you get to the end of an arc, if you don’t continue to accept the instance owner’s quest, you will be placed back on your original storyline.
It sounds like sometimes he is the instance owner and you accept his progress, and sometimes you are the instance owner, and accept your own storyline.
There is no way to ‘fix’ this, other than only accepting your own storyline quest completions.
I can’t progress in his instances though, I have to do it myself. It’s not that big of a deal, thanks for the response anyway. Also we just retook Claw Island and I had the option of selecting either Vigil or Priory for where I was a part of the orders. I included a picture.