Canadian self adhesive issues

As winkerbids stated you can buy the quarterly packs from Canada Post that include the die cut self adhesives and actually catalogue as a higher value than the ones that are cut from the booklets.

However if you do not want to go that route I would use a method that I have found to be successful. Take the booklet and bend it along the edge of the stamp so that the stamps face out i.e. down the middle. Then take a very sharp small knife (not a serrated edge though) and cut along the fold. Do this till you have removed the stamp from the booklet.