Showing too much leg(g)?

I'm sure we're all finding a great deal of amusement - and maybe for some of us, quiet satisfaction - at the way MPs are once again being hounded about their expenses. But has Sir Thomas Legg gone too far? He was asked to consider all claims by MPs for expenses over the last five years "against the rules and standards in force at the time". Those words are crucial, because he quite deliberately and blatantly has not done that. He has ignored the rules and standards in force back when the claims were made, and instead has imposed his own rules and standards and judged the claims against those. It is as though some aspect of your behaviour in the past were being judged, not on whether it was right and proper at the time, but on whether it conforms with the personal views of some individual today. I can well understand MPs taking a dim view of this.