The guy seemed badly unprepared for that final battle...! If you do intend to shrine boom, use heavenly kami to make it worthwile and get shrine costs down. Once you've done that, if you still want to send shrines, send 600 wood instead since it'll be worth more than 6 shrines (unless you aim to deploy in dangerous areas ). Port consulate played way, way too late.
However, good play on your part. Bit lax on his part!