The nose just pitches up too much further delaying the increase in speed needed to recover. Perhaps the procedure might be amended
Our simulator training includes a go around at 300 feet at the point of stall (stick shaker operation). This is done in simulated IMC. The pitch up caused by firewalling the thrust levers (ground contact imminent) is easily held by elevator and a touch of stab trim. With flap 40 and gear down the 737 will climb away.
If pilots under training stuff up, we simply practice the manoeuvre until they improve. It takes about four go's and then no further problems unless of course you have difficulty with raw data go-arounds on instruments.
Obviously it is a critical stage of flight and the trick is to gradually let the speed to increase to Vref before first flap retraction while at the same time ensuring a gentle climb. Naturally if the pilot cross reference on instruments is slack, and he allows the pitch up to become excessive, then the stick shaker will warn him to lower the nose slightly.
Because few operators conduct the power on stall recovery at such a critical altitude, it becomes a bit of a bogeyman when conducted for the first time. But in reality the manoeuvre does not require superman skills - just ordinary flying ability.