The intended murder of Pettigrew and moral corruption (Was; Vengeance on Snape)

[Amanda]

No: HPFGUIDX 116122


<huge snip>
 To return to Sirius (and Lupin): Harry may have been protecting 
them  on the "sentimental" grounds that his father would not have 
wanted  them to commit murder, and I admit he knows nothing at this 
point  about the Killing Curse, but he instinctively realizes that 
they would  have been guilty not of killing someone in self-defense 
but of  murdering, two against one, an unarmed man.

<huge snip again> 
 As for Lupin, equally willing to kill his former friend for 
betraying the Potters and framing Sirius, it's hard to understand his 
motivation. Solidarity with Sirius? Or is he once again afraid to 
stand up and do the right thing? Evidently, he has to be shown what's 
right by a thirteen-year-old boy. And what of his future? Endless 
guilt and remorse or a soul corrupted by the AK so that he, like 
Barty Jr. and the young Tom Riddle, is on his way to becoming 
irredeemably evil? At best, a lonely existence in Azkaban with 
Dementors for company and his own monthly transformations into a 
werewolf with no wolfsbane potion to soothe the pain.
 
<another largish snip>
 Carol, who still can't figure out *what* Lupin was thinking

Kethryn now –

Sorry about cutting so much out of the arguments that you have 
presented but, as they did not pertain to what I'm going to get into, 
it is best that they were left off.  

Why are people so willing to cut Sirius some slack because he was in 
prison for 12 years but not willing to cut Lupin some slack on his 
full moon days?  It seems to me that Lupin hasn't had it any easier 
than Sirius has; loosing all three of his best friends, not being 
able to keep a job for long, plus being a werewolf at least one day 
out of the month.  I suppose that you can argue that the man should 
be used to it by now...I'd hate to think of that as just being 
something to get used to, myself.

Ok, so picture this.  It's the night of the full moon and, as soon as 
you see the moon, you are going to turn into a werewolf.  Do you 
think that would lead to rational adult behavior on your part?  I 
happen to believe that, as the full moon approaches, a werewolf 
looses more and more of his/her humanity without actually turning 
into the wolf state.  Or, in other words, Lupin is under the heavy 
influence of the werewolf at this stage of the moon and is having to 
fight the impulses to shed off the rest of his humanity.  It's a war, 
one that he wages each month, but this month, there is a little thing 
called finding the person responsible for murdering his best friend 
and framing the other one to tip the scales.  His humanity, his 
morality, go right out the window and he lets the wolf take over, 
mentally.  Therefore, while I believe that Lupin is responsible for 
some of his actions, I also believe that he was not in his right mind 
at the time and can thusly be excused from wanting to commit murder.  
I don't think that Lupin wanted to show solidarity with Sirius or 
that he was afraid to do the right thing, I think he was WAY beyond 
those complicated concepts and was, instead, acting on primal urges.  
Or, in other words, the brain was disconnected from the body


Finally, how many of us have wanted to kill someone at one time or 
another?  I know I have.  Does that make me immoral or just human?  
Personally, I don't think it's immoral until you act on it


Kethryn who is terribly glad she isn't a werewolf...