“Arab on Radar broke up a few weeks ago, and no one seemed to notice. Whether to your delight (DiCrescenzo) or your chagrin (a dude who likes them), the haywire Providence, RI quartet has called it quits after seven-plus years, dragging four full-lengths, four seven-inches, and four comp appearances in their wake. Misters Post-Traumatic Stress Disorder, Type A, Clinical Depression, and OCD are citi”