Girl Falling

Paul Farhi: Lindsay Lohan, the actress, party girl and one-woman driving menace, continued to spiral downward yesterday, although it's not clear how much further she can fall.
The starlet's arrest early yesterday in Santa Monica on drunken driving and cocaine possession charges came just days after she was released from treatment at a Malibu rehab clinic. Her apparent relapse suggests either the depths of Lohan's addiction or the ineffectiveness of her treatment. Lohan reportedly checked into another facility immediately after being released from custody.
This was Lohan's second brush with the law in less than two months. She had a run-in with some shrubs and a tree on Sunset Boulevard in…