In case you forgot about what kind of conservative Jim DeMint is...
From Wikipedia:
DeMint stirred controversy during debates with Tenenbaum when he stated his belief that openly gay people should not be allowed to teach in public schools. When questioned by reporters, DeMint also stated that single mothers who live with their boyfriends should similarly be excluded from being educators.
He later apologized for making the remarks, saying they were "distracting from the main issues of the debate." He also noted that these were opinions based on his personal values, not issues he would or could deal with as a member of Congress. In a 2008 interview, he said that while government does not have the right to restrict homosexuality, it also should not encourage it through legalizing same-sex marriage, due to the "costly secondary consequences" to society from the prevalence of certain diseases among homosexuals.
SNIP
On October 1, 2010, DeMint, in comments that echoed what he had said in 2004, told a rally of his supporters that openly homosexual and unmarried sexually active people should not be teachers.
Whether it's a yet-to-be-publicized scandal that caused to him to unexpectedly retire, or just old-fashioned greed, I think we can all be happy this scumbag is no longer part of our legislative branch.