I'm considering removing a wall in my master bathroom but I can't tell if it is a load bearing wall or not. I've done a fair amount of research. I don't have the house blueprints, and it's difficult to get above this area in the attic. The house was built in 2007. The joists are East and West, parallel with this wall. I felt pretty confident removing this wall until I cut a small hole for further examination and found several stacked two by fours at the top. Is it common to do this on non load bearing walls or am I right to be concerned? Here is a picture for reference:
I removed some more drywall and checked in the attic. Here you can see there is a brace resting on a 2x6(?). I've never moved something like that before. Are there DIY options to continue with this project, or should I abandon hope?