Wow, this thread sure went into the garbage fast.
It's unbelievable what happened to the OP - even more that an apology was not issued immediately by the night manager. I hope the OP will keep us updated with any resolution. It's a huge breach of security to just arbitrarily issue keys and some of the hotel industry's worst incidents (and corresponding lawsuits/settlements) have arisen due to this practice, so every property manager should be very concerned about security in this regard.