Putting aside the paranoia as justifying fraud.

Of course OP can get away with the ticket fraud once, but LH is especially vigilant. Try it again and the result may well be a polite, "we've determined that you had no intent to fly the ticket at the time of purchase, so we'll see about a refund after our investigation."

There is a thread about a UA GS who had his GS status revoked for doing this repeatedly, although it wasn't to gain lounge access.