Can you be spiritual without being religious?
Spirituality might be exemplified by this quote.
John 6 ; 63 It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
One can practice spirituality alone. One cannot practice religiosity without a group/tribe.
Religiosity, I would define roughly, as promoting an organized or local church/temple/tribe etc.
Spirituality ignores our tribal instincts. Our religiosity demand that we cater to our tribal/fellowship needs.
If you are spiritually minded and have a working moral system that you think is the best, I think that you should want to share it and have others follow it. To share it should have you join a church or religion so as to promote your good thinking.
Does a spiritual mind, if truly spiritual, have to join a religion, even if not morally up to your standard, in order to share your view and perhaps help that religion rise up to your better standard of excellence?
If you answer yes to that question, is that why spiritually minded atheists and others now forming atheist churches or churches that take a more secular role within society?