what does it take to downgrade? Are you paying 175 or not?
It's easy to downgrade. Just call them up, and they will downgrade you to gold, green, or zync (no points transfers to airline programs with zync), then refund the pro-rated higher annual fee back to you, and charge the lower annual fee going forward. Or, you could just get the first year free with the current Gold PR offer, then cancel your Plat for full refund.