It looks like Donny has hopped offline for the time being, I have done these water pumps a bunch of times and can be a pain in the butt if you dont know "the secret"!
Once you get everything off, and are pulling the pump and pully out, you need to pry the motor to the side with a prybar, that is the only way I have seen it successfully done, and that is how I do it. I dont think it will work any other way.
It will be close, but it will just barely come out. It is easiest with one person prying and the other pulling the pump out.
Also, a little tip when putting it back in, put the pump in first, then pry the motor to get the pulley in.
I hope this helps! Please give the accept to Donny, I was just helping him out!
Let me know if you have any more questions!