I'd check the spindle as well. Looks a little tweaked to me.

One approach that might work here is securing the spindle side of the crank in a vise, then gradually bending the arm back into shape, using a cheater bar or gaspipe.

The jaws of the vise could also be used as a pseudo-press. MA's suggestion about the hydraulic press would be a better option if you go that route, though.

The problem there is that not everyone has access to a hydraulic press.