Forgoing Enlightenment

On what basis can a person who chooses to forgo enlightenment (arahant status) for any reason (for the supposed benefit of others, for example) be considered a Buddhist? If there is such a basis, can a person who intentionally retains a wrong view (seeing the body as self, for example) also be considered a Buddhist when they won't renounce such a view once corrected? Or a person who intentionally retains wrong action (stealing), saying that such action benefits others? I am mostly referring to the choice some people make to be a "bodhisattva" when they see that choice as intentionally putting off the efforts and strivings necessary to become enlightened because they would rather work "selflessly" for others' benefit. Where is the support for such a choice found within the Buddha's teachings?