The tissue around the cloaca should not be green.
At times chondros can kick out some mucus especially with teeth.
Which is what I am guessing you saw and called a spur.

Anyway yeah just keep an eye on him and you can always drop a fecal off at the vet.

gs
-----
Greg Stephens
Arboreal Specialties
gstephens1@zoominternet.net