The idiotic reasoning behind the original JW quote is that one should continue "serving Jehovah" even if the organization fails to live up to what is expected of it. But get this: by "serving Jehovah", what they really mean is blindly serving the corrupt organization that doesn't measure up to what it professes to be, because they equate "serving Jehovah" with being in the organization.
"The form of worship that is clean and undefiled from the standpoint of our God and Father is this: to look after orphans and widows in their tribulation."
Could not be simpler.
Also, does not the wording indicate that there would be a form of worship that is not clean and is defiled?
Would not that defiled form of worship be the neglecting of orphans and widows (doesn't state "Christian" orphans and widows either)?