Re: Used and Abused.
I'm not sure about Canadian law, but here in the U.S. a verbal contract is binding. His promise to pay, delivering a copy of the master recordings, and to give you a credit on the album are what he owes you for the work you performed. A lawyer could clarify whether or not it will be worth your while to pursue it.
Your best course of action is to contact him and discuss this. Try to resist threatening legal action until you are certain he has no intention of making good on any of his promises. Otherwise he may just become more adversarial than necessary.
I understand how you feel. Regardless of how much money you lost, it's usually the principle of the matter that gets you riled up the most.
You were damaged in a few ways, so pick and choose your battles carefully. In the long run, getting the album credit for your drumming will be the most valuable to you. Any money you might get on your own or through legal action won't give you much satisfaction.
Sorry to hear this happened to you, but good luck with the whole situation.
Philippe - Eat, Sleep and Drum.. .. it makes for a good weekend.