That is reguritated. Probably wasnt in his stomach more than a few hours.
How old is he/she?
Give em a week to recoup then try again. Be sure to keep a very close eye for a couple of hours after.
I hope all goes well....let me know.

P.S. Do you feed in the enclosure? If so he could be impacted with the substrate..looks like you use aspen,which is easily ingested.

Brian