Jacksonville Jags Great Marcus Stroud -- WE'RE NOT DEAD YET ... Still Shot at Playoffs! (VIDEO)

Don't stick a fork in Jacksonville yet -- they've still got a real shot at the playoffs ... so says Jaguars great Marcus Stroud.  The 3-time Pro Bowler -- who retired in 2012 -- says he'll always be a Jag at heart and is pulling for his guys…