I think the issue is that in the moral sense if something is inadmissible but is used to obtain admissible evidence, everything derived should also be inadmissible (GPL style). In this case the officer in perjuring himself by trying to pass off inadmissible evidence as admissible but this is more of a play on words than actual legal doctrine if I understand it correctly. What I think OP is saying is that it should be perjury and I totally agree.