The vote on any such resolution shall be deemed to be a mineralization of the action of the approving authority and not be an action of the approving authority. However, the date of the adoption of the resolution shall constitute the date of the decision for purposes of mailings, filings and publications and set forth in subsection 17-12.6. If the approving authority fails to adopt a resolution or memorializing resolution, any interested party may apply to the Superior Court in a summary manner for an order compelling the municipal agency to reduce its findings and conclusions to writing within a stated time, and the cost of the application, including attorney's fees, shall be assessed against the municipality.