I'm very comfortable with respecting the belief systems of different cultures, I just don't think that this qualifies.
After all, the Catholic church itself is very reluctant to claim that people are possessed, or to perform exorcisms. So much so that I doubt you could get a priest to perform an exorcism on a newly-presenting patient with altered LOC FI.
And if there was a pastor there I'm don't get why (given that he clearly favoured the exorcism concept)
he didn't call in a favour with the archdiocese and skip a hospital admit altogether. After all, if you don't think there's a medical problem why would you present to a medical centre?
Given that the patient recovered without an exorcism (or, from the sounds of it, any other curative treatment), I think that heaping scorn upon the idea of stanic possession, at least int his case, isn't exactly unwarranted. Positing conversion disorder or attention-seeking behaviour seem pretty accurate as well