STEP 15: If you don't have the time to purchase the Mac Mini Logic Board Removal Tool, the round stock on a large binder clip is PERFECT for the job. It requires a little bending and cutting but it worked perfectly!!
And as jon jon stated, it works like a lever - not a pull. You can feel it kind of click in to the lever points below.
Bravo to ifixit.com for the easy to follow instruction!!