Nice try.
The missed "putt" doesn't count. A conceded putt is a conceded putt. Once one player informs another that the putt is conceded, that player's play of the hole is over and his or her score is in the books (see Rule 2).
Note that conceded putts are only allowed in match play competitions, and that they differ from "gimmies," which are not allowed by the rules under any circumstances.

