You should be able to clean all parts of a rifle.

Here is a link to a basic glass bedding job. The describe being able to take the rifle apart. http://riflestocks.tripod.com/bedding.html

Give them a call tomorrow, or Monday. Most likely they'll tell you that you are GTG. I'd loosen the screws that hold the stock to the barrel/action and see what happens. The bedding is only in the action area, and it should release easily.