Is JaMarcus Russell a bust?

Back in October I questioned whether or not former first overall pick JaMarcus Russell was a bust after the Saints' routed his Raiders 34-3 in Week 6. And after the San Diego Chargers blasted Oakland 34-7 on Thursday night, I'm proposing the question again. Russell completed 9 of 13 passes, but he two of his three incompletions were interceptions and he threw for just 68 yards. On top of his poor numbers, he was also carted off the field at halftime with an ankle injury. Andrew Walter replaced him in the second half and was equally atrocious, throwing for 61 yards and a pick himself. In 12 games (he missed one due to injury), Russell has compiled a 70.1 passing rating, 1,797 yards, seven touchdowns and six interceptions. His completion percentage is a paltry 51.4% and he's thrown for over 250 yards once this season (Week 4). But perhaps a more telling stat is that he's been sacked 27 times this year, or 2.25 times a game. No quarterback, not Brett Favre, Joe...