I need to change the rear bogie wheels on the old ladies phazer I took all the tension off the track but still cant get the out side wheel on the left side off, right side comes right off when I loosen the nut and cotter key,but when I turn the left side it spins the whole shaft, So how do I change the outside left wheel ?? drive out the shaft or does it turn out.

HELP!!!!
I've got mud in my blood and ice in my veins.