It sounds like all the paperwork is available outlining and confirming the works to be done and why it will get done by the owner, the agreement to reimburse them, and the bill since presented for payment? I’m pretty sure the horse has bolted then and your bill still outstanding. Any Motion afterward would therefore seem invalid. The committee still exists and carries it’s obligations regardless of who is currently on, or was on, it. I’d put a letter of demand for payment within 2 weeks to the manager and proceed to adjudication. Don’t muck around, it seems a no-brainer.