Weird Memory to share with Thisobald

I am playing as the dark urge vengeance paladin. I understand that from number 2, it details what I've done so far. But number 1 does not make sense. I didn't kill the grove, or the myconid colony.

Could this be a prior memory of the dark urge before his memory got wiped?

I am playing as the dark urge vengeance paladin. I understand that from number 2, it details what I've done so far. But number 1 does not make sense. I didn't kill the grove, or the myconid colony.

Could this be a prior memory of the dark urge before his memory got wiped?