Charlie Rangel yesterday was granted a face-saving "leave of absence" as House Ways and Means Committee chairman, pending the outcome of multiple ethics investigations. A "leave of absence"? He should be in handcuffs. Consider where you'd stand with the IRS and the FBI if you: * Failed to report and pay taxes on rental income from a Dominican villa (as The Post first revealed two years ago). * Failed to report on millions of dollars in assets, bank accounts and property, going back seven years. * Used congressional stationery to seek donations for a CUNY educational center named after you.