Image courtesy the DCist tipline Life doesn’t appear to be a stroll in a rose garden lately for accused White House crasher Carlos Allen. On March 15, Allen, 39, posted a message on the website of his former party promotion and publishing outfit, HushGalleria, explaining that he had decided to “retire” from the company, effective immediately. His quixotic campaign for mayor has gone exactly nowhere thus far. And now it appears as though he’s…