You may remember our brief run-in with 50 Cent back at CES, where he announced a partnership withSleek Audio for Sleek by 50, a pair of "wireless hybrid" headphones with built-in Kleer technology. Today the company revealed that it has terminated its agreement with G-Unit Brands, 50's licensing company, and that it will be "re-evaluating our Wireless Hybrid over-the-ear headphones at a later date." There's no word on why the collboration went awry, and the company only indicates that it has decided to focus on its in-ear offerings instead. Of course, we've got way more than 21 questions about what made the relationship go sour, but hate it or love it, Sleek by 50 is no more. Disheartening PR after the break. Update: Looks like it was 50 Cent who terminated the deal, after all. According to XXL , our man told the magazine that he has "established a new company that is developing a complete line of audio accessories, including wireless headphones