Zmx: What you describe is probably what sparkyx calls a "Neutral PI." Neutral meaning you have to interpret it in relation with your other PIs. If, overtime, you notice you have negative PIs when a neutral PI occurs, then the PI is most likely negative.
Because you have shown many other positive PIs lately, your flaccid-hardness is most likely a positive PI as well. In which case, everything is going great
Sparky's
Physiological Indicator article has more information on neutral PIs and how to interpret them.