OK, here's my view on this. When the manager threw the money on the floor has he actually paid you? I would say no, as payment involves an exchange of money, the only exchange here was between the manager and the floor. If that was me I would have walked away leaving it on the floor, the manager can then either realise his mistake pick it up and actually hand it to you, or you go home without the payment, report the club, and you will be paid and the club fined.
Obviously you did pick it up so you can't report that you weren't paid. However, I would strongly suggest creating an extraordinary on WGS as that behaviour is not acceptable and the manager should be brought to task.