The site's reputation is questionable if they only release the funds because you posted in this forum.
They should keep their TOS and implement it no matter what, but if it's not clear, they should satisfy the needs of the gamblers as this forum is huge and could affect their entire reputation. Congrats OP for your win, don't be tired of sharing your stories here as the community is very active to help.
I don't like the situation that happened to OP, but with so many promotions and bonuses, it could just have been a mistake.
It is known that there are always many promotions during the Christmas time, and often each of them has different rules, and after all, normal people work in casinos. Someone could just made a mistake with the promotion, OP reacted nervously and therefore such a situation could have happened.