Easy. Take a philips screwdriver, and a hammer. hammer the screwdriver in at the edge or side, all the way till it hits the other side. Use it like a handle to twist the foliter till it loosens and you can unscrew the rest of the way by hand.
messy, but it works.
success! i ended up gripping the filter with pliers and loosening it that way. they must have overtorqued this thing like CRAZY because i absolutely wrecked the filter with the pliers.
the new filter fits those end cap wrenches nicely though
edit: my hands were a little too big so i gave it a few turns with my wrench and end cap attachment. at least it fits for the next time i oil change