I have laboured through the last 500 odd posts but may still have missed it.
An engine FIRE does not necessarily mean a loss of thrust, usual drill - cancel the bell, continue climb to 400', carry out fire drills and assess the situation, usually an immediate return. An explosive failure accompanied by a fire would be different and not only cause an immediate loss of thrust but if the rotating parts also seize then the torque and yaw effect of the sudden power failure on one side will be considerably increased. The mis identification of a fire, (no loss of thrust), with a failure and a subsequent rudder input, especially at low speed/height, could well prove disastrous, but we don't know, do we?
Once again, sorry if this aspect has already been covered but I missed it.