Think SQ is worried about the load for ewr/SFO/lax-sin?
They're giving decent fares for PE P/R in both directions and availability is pretty good, AND putting it on spontaneous escapes discount (40k each way) and business on sfo/lax-sin(68k)
KrisFlyer Spontaneous Escapes
Load either direction for the first few weekends looks light for ewr-sin