Did one of your tellers cash this check? If so, I have a hard time seeing how it would be supported by the above-mentioned court-case. That was dealing with a non-bank depositary, not a traditional bank where the teller made a mistake.
But again, I don't have enough info on how this happened to point you in the right direction in the UCC.
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CRCM + CAMS = certified compliance nerd
Opinions expressed in these threads are my own and not my employer's.