I already left negative feedback for Coinplay some time back (because of their whole conduct throughout the scam allegation) even though I am late posting in this thread, I wanted to highlight what you wrote because that is ultimately what forum members opinions most probably should be based on.

In the end there should be no serious debate about what did or did not take place between the OP and Coinplay because after AskGamblers made their ruling that road is now closed. Anyway, since both parties agreed to take their claim and counter-claim to AskGamblers the common sense outcome would be to accept their judgement otherwise why agree to let AskGamblers evaluate the allegation.

Coinplay have destroyed their reputation in this forum over a 0.291 BTC payout and the chances are they will never be able to repair the damage even if they return and pay the OP what he is owed. Will the flags and feedback be revised/removed by all those tagged?