Nath v. Gonzales, ___ F.3d ___, 2006 WL 3110424 (9th Cir. Nov. 3, 2006) (BIA acted arbitrarily, irrationally, or contrary to law in denying motion to reopen removal proceedings after conviction had been vacated, even where order vacating conviction did not specify whether the conviction was vacated on ground of invalidity or solely for rehabilitative or immigration purposes).