The previous picture is the baffle I made at the end of the pipe, this is the whole thing. All strait pipe till the very end where there's a little baffle I made.

I can hear the ground rumblin' from here... and you're worried about a little flame?

Thanks for the info. A pretty big fire ball shoots out of this thing after I hit the kill switch witch is always fun to watch.

It might be that you don't have anything wrong....or anything to fix.  When you run down the road at speed you get that muffler really hot, and the heat wrap might be holding a bit more heat inside....but no bigee as eveything is hot in the exhaust system.  When you stop your bike you are killing the ignition source in the cylinder (spark plug) - but not the flow of air through the carb or piston.  As the engine is spinning down it is pulling air through the carb which picks up fuel, then it goes through the cylinder and out into the exhaust.  As the unburned air/fuel mixture heats up in the still hot exhaust - eventually it reaches a temperature somewhere in the pipe that causes the air/fuel mixture to ignite.  It makes a flame that heads out the back of the pipe, and depending on the richness it either explodes and makes a pop.....or just burns.

Is it just me.....or does the inside of that exhaust system look awfully clean?  Where is the black/brown color that tail pipes turn when the engine runs?