Took me a moment, but I figured it out. I used a universal joint Torx E8 socket (barely fit).
https://www.amazon.com/CTA-Tools-922.../dp/B012UTSRUI
Another option that I believe will work is a Torx E8 wrench. One like this:
https://www.amazon.com/Beta-Double-E.../dp/B003E369LO