Book titles: do they show Harry's challenge for the year?

[romuluslupin1]

No: HPFGUIDX 111164

When the title for book 5 was announced, someone said that so far all 
titles had shown Harry's challenge of the year and wondered if the 
Order would show the same pattern.

While on first reading the Order seems to be on Harry's side (and 
it's certainly a positive thing in itself), it could also be seen as 
having negative effects for Harry:

1) He wanted to join, but was rejected because underage

2) The OOTP kept secrets from Harry, and this had dire consequences 
for him.

I was wondering in what possible way the HBP, whoever he turns out to 
be, could be bad news for our boy. Any help from the theorists among 
us? If (God forbid) the HBP is Snape (I've seen some posts 
speculating he might be a half blood) I could see that happening ;-)

Remulus Lupin, off with another whacky theory