This article may explain the pic you linked RN ( I don't know if this is true as I did not see the Direct TV broadcast of these to see if they were stretched)
http://www.tvpredictions.com/dwire071910.htm
Washington, D.C. (July 19, 2010) -- DIRECTV announced last April that it would air all five seasons of the HBO series The Wire in High-Definition for the first time.
DIRECTV last night debuted the first episode of The Wire, but it was definitely not in HD. Instead, DIRECTV stretched (or cropped) the program from its original 4:3 format (as it aired on HBO) to 16:9 so it would fill the entire screen, apparently trying to fool people into thinking it was in HD.