Well. you have to be able to differentiate between shriveled up, deflated, and balling up.
Balling up on Ritteri and BTA is not a concern. This is their natural behavior.
However, the term deflated or shriveled up and especially used in conjunction with mouth opened does sound like an anemone in distressed. I wouldn't be that much concerned if it's a BTA. But a deflated Ritteri with gaping mouth is something you should keep a close eye on.
Ritteri, in general, are harder to get acclimated and is a poor shipper. Good luck.