People need to stop reading symptoms online and jump the gun and think IBD, IBD is RARE.
Your snake looks up and that's 99.9% all there is to it, since there is no other apparent issues.
Now if you are really that worry and want to rule out IBD since this is what you fear, take it to a vet, have blood drawn and sent to florida.
As for quarantine it's a little too late if there is something going on you quarantine an animal upon arrival not once it's already been in proximity of others especially in cases of IBD, OPMV etc.