I am glad, dear Fr. Gregory, that I was not quite as off target as I had feared. Kirk is surely right that 'ethos' is one of those nice elastic words which can mean whatever it needs to mean at any particular time.
Your point about the real 'mindset' being the different way of, if you like, doing theology, is surely at the heart of what Orthodoxy means in whatever context one encounters it. Having had a strong patristic background, Orthodoxy has always made sense of things which used to puzzle me like original sin and salvation.
I suspect I am supposed to like the Western Rite, but somehow I don't. It is all very well to say what was and was not the case in 1054, but that was nearly a thousand years ago, and although there are times reading some of the stuff advocating it when one feels that that amount of time must have passed since one began reading, the reality is that it would be as much of a revival as anything else.
I am still chuckling at the men with beards with thick Slavonic accents; these, I am told, can be acquired along with the ethos.
Happy though I often am in the theatre, one can perform happily there; worshipping there seems another matter.
In this is love, not that we loved God, but that He loved us and sent His Son to be the propitiation for our sins. (1 John 4:10)