What turned Snape (Was: JKR site update SPOILERS)

[Ceridwen]

No: HPFGUIDX 158939

Pippin, quoting:
> > "You have no idea of the remorse Professor Snape felt when he 
realized how Lord Voldemort interpreted the prophecy, Harry. I believe 
it to be the greatest regret of his life and the reason that he 
returned--" 

Hickengruendler:
> Yes, but Dumbledore did not say, why Snape turned because Voldemort 
was targetting the Potters. 

Ceridwen:
Dumbledore doesn't say that Snape turned because LV targeted the 
Potters.  He says that Snape felt remorse and returned when he realized 
how LV interpreted the prophecy.  Not the same thing.  The Potters are 
not even mentioned.  This leaves open the possibility that Snape felt 
remorse because LV was going to kill an infant.  Some of the worst 
killers on earth do not take kindly to child-killing.

Ceridwen.