Depending on the engine, but those that I am familiar with all inhibit the autofeather circuit to both engines if either power lever is reduced below a certain setting. In the case of surging or compressor stall, in the absence of any other immediate memory drill, I would only reduce power on the affected engine to somewhere below the autofeather inhibit, but not so far as to allow the prop to windmill. This means at least some useful torque is available, but the engine has been offloaded somewhat. With less fuel going in, less chance of damage. The airflow is not something you can do anything to improve on take-off anyway. A windmilling prop at low speed is a far more dangerous beast than a rough running engine!
If the engine did subsequently fail, the two ways to deal with it could be to either simply advance the power lever above the inhibit setting and let the autofeather do its job, or call for a manual feather. Obviously, the latter being the preferred option if the engine is overtemping.