Weird political story: released Bush Guard memos likely forgeries

So, I saw the news articles about the release of memos from (and one presumably from) George W. Bush's commander in the Texas National Guard in 1972 that suggest that he did in fact disobey an order to get a physical and had somebody pushing for lenient treatment for him and to "sugar coat" (according to one memo) reports about him.

( Strange stuff about the memos. )

The short of it is that it looks like they were very amateurish forgeries.

The memos were evidently released by 60 Minutes. I read one allusion to them being released by the White House as well.

( links to more information )

So the question is, who forged these memos and why? They look unflattering to Bush, so it seems unlikely that the Bush campaign or pro-Bush groups planted them. I personally think the Kerry campaign is above that sort of thing, but even if they weren't, I think they would have done a better job (even bearing in mind that stuff like this needs to be done by a very small group of people). It's not like typewriters are hard to come by. So, an independent anti-Bush group maybe? Or should we put our tinfoil hats on and assume the forgery was supposed to be discovered, or that the memos were supposed to distract from something else? (I suppose one much less sinister possibility is that somebody retyped the original memos, but then why would 60 Minutes try to pass them off as photocopies of the originals, and why would some of them have Killian's signature? Did any of you see the actual 60 Minutes piece?)

Anyway, I detect weirdness ahead.