Instead of releasing the tracks without drums, you should release the mixdowns of each instrument individually. You could even charge a few bucks for it. Let f

Instead of releasing the tracks without drums, you should release the mixdowns of each instrument individually. You could even charge a few bucks for it. Let fans play their own instruments, re-mix, and upload. Have a contest for the best interpretation. Doing it for all the tracks might help offset your drummer's aversion to the idea.