I think Marcus will get more "air time" if he leaves before the final, and I am sure he realises this. Once the final has happened, that is the end of Big Brother's Little Brother, and the final 6 or 7 get no coverage whatsoever unless they actually win. I am sure Marcus is acutely aware of this. Sree appeared on BBLB many times following his eviction, and on Big Brother's Big Mouth a couple of times. I really think this is a plan on the part of Marcus, who realises he will gain far more publicity by leaving before the end