Most likely...they wouldn't do surgery. From what I have read and heard...they would probably flush his system with an enema...if he has internal damage...I'm not sure what can be done. But don't panic yet...I have had snakes ingest substrate and pass it. Just make sure if you are putting the dish in his tank, you put paper towels down to cover the aspen and put the dish on top...and supervise closely. Watch him closely for a few days and take him to the vet in Atlanta if he shows serious signs of distress.