My Pit Boss has not exploded yet but I did have flame travel up the auger tube. I had another cooker going because of the number of ribs I had to cook. Moved Pit boss ribs over and cleaned all the pellets out cleaned the burn cup and restarted. It was a little exciting to see more smoke coming out of the hopper than was coming out of the stack.
I don't wander far when cooking on anything after a lesson years ago. Anyone else ever try to cook a butt on a gas grill with lava rocks. Lucky the aluminum hood on the grill did not melt.
Another added tip to help prevent Burn Back smoke and fires in Pellet Grills... Along with using a Shop Vac to vacuum excessive Pellet Dust from the pellet hopper, it’s also a good idea after every 4-5 cooks is to prime/clear out the Auger tube of pellets and then Shop Vac the Auger tube of excessive pellet dust that may have accumulated inside of it. Like Pellets, pellet dust can easily ignite and burn... and when there’s pellet dust in the Auger tube, that’s just added fuel for a possible Burn Back situation to occur. And No One wants that to happen. Just to be clear, Pellet Ash.. can and will smother a flame and is the residual of burnt pellets. Pellet dust is unburnt residual from fresh pellets that can and is very flammable. Use a Shop Vac to remove both and your Pellet Grill experience will be more enjoyable, trouble free and most importantly safer. Good luck.