About my Previa and Sienna

My van was dirty in the seat rail tracks. Once I started to take things apart, I saw how bad it was. I took this opportunity to do my best in cleaning, but also to take apart the Sienna.

So I don't know how it got bent, but my rear wiper arm was tweaked. I believe it happened after I did a drive through wash. I tried to bend it back, but it didn't work. While at the junkyard, I thought you had to take it apart from the inside of the trunk, so I searched really quick. Nothing. Then I realized there is a cap and bent that back and 1 10mm nut and its free.