Some of my rabbits have pretty dry manure so it's dry to the touch. I'm thinking if it can burn maybe it's worth the hassle to burn it in the fireplace.
I don't have any real insight on the subject other than I think there is the possibility of it smelling really bad. I guess you would have to try to find out though.
I know it can be used for fertilizer, that might be a good use for it too.