If you keep pulling on the collective increasing blade pitch, the rotor will droop when aerodynamic demand has exceeded power available from the engines. To limit rotor droop and subsequent rotor effectiveness, both engines will auto arm to 2 minute power automatically with the rotor RPM decay. The increase in temporary blowaway power from the engines, may save you from your impending situation. 2 minute power in the 76 does not exceed the maximum design limit transmission torque. Utilizing 2 minute power will accumulate towards engine maintenance schedules. I believe 10 minutes of 2 minute power can be accrued before an engine tear down is required. All S76 models have blowaway power available. 2 minute power does not end at 2 minutes. You can pull for as long as the engine will hold up as you're operating outside of the certificated design limitations.