Phosphatidylglycerol phospholipase required for the removal of excess phosphatidylglycerol (PG) via a phospholipase C-type degradation mechanism. 1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol) + H2O = a 1,2-diacyl-sn-glycerol + H(+) + sn-glycerol 3-phosphate Leads to the accumulation of phosphatidyl glycerol. Present with 3270 molecules/cell in log phase SD medium. Belongs to the glycerophosphoryl diester phosphodiesterase family.