Yes, but it wasn't stopped for that reason. Once Obama is installed, he was going to fire all those Prosecutors because they are of the wrong political persuasion (wasn't Bush investigated for that). Thus, if Fitz waited much longer, he'd have been out of a job and the man/woman replacing him would sweep the whole matter under the carpet. So they may have pulled the trigger a little early, but they nailed a big bad guy with the shot.
You guys need to review how a conspiracy charge is used. A completed bribe is not necessary - only an intent to commit a crime between two or more people. Blago’s goose is cooked - like thedentist says Fitz has a limited time frame to work - if he works over Blago he may roll over on the big guy. Fingers crossed. ;-)