What if an unsupported alternative meaning is merely conceivable for zahir?

Zahir, Nass, Mufassar and Muhkam: Degrees of Textual Clarity

• Every theoretical alternative must first be eliminated
• Unsupported possibility does not nullify the apparent ruling
• Zahir becomes binding only after clarification by the speaker
• Zahir is not authoritative until non-abrogation is proven