Not sure, but I think he may have a stuck bit. If that is the case, best to soak (just the tip) in PB fluid. Or better, so you do not get fluid in the motor, just spray it a little at the tip, and wait a few hours and repeat. WD-40 will not work as well as PB, the stuff just stinks to high hell. assuming this is what you meant, as if you know how to use the router, I must assume you know how to change a bit. Otherwise, yes a router can bite, and take a finger OFF VERY EASY, its second in my list of most dangerous shop tools, just behind a table saw. Granted, this mainly depends on the bit.