As far as I know there are only 3 way to get a compressor stall and they are; damaged engine, partially blocked inlet or disrupted airflow to the inlet. The most likely reason for a blocked inlet would be icing, however it could be a heap of grass or snow across the front of the particle separator or filter or a very dirty filter.
If the bleed valve is functioning incorrectly that falls under a damaged engine. LRP is correct on how it functions.
And just to correct the OP the heater also draws it's air from the compressor and not the turbine.
All I'm really trying to get across is that the correct action is to lower the collective to reduce the power demand and that rolling the throttle off is not the correct procedure and actually dangerous IMO.