Trying to remove the crank from a Trek Multi-Track 700. Crank says Altus, chainrings say Shimano hyperdrive (if that makes any difference).

Pulled the left crank off the square taper with a regular puller.

Then I was able to crack the adjustable side cup loose (shimano multi-spline bb tool, 16" cheater bar, lefty-loosey), and unscrewed it a couple turns, but it didn't come all the way off, it got harder and harder to unscrew until the whole crank was bound. Screwed it back in some and the crank can rotate again.

Doesn't seem like the BB can just slide out so I can get at the fixed cup, like I'm used to.

Also it's an E-type FD mount, if that makes a difference, I've never worked with one of those before.