There's a lot of speculation and reading between the lines going on here. There is really no information to go off, and jumping to conclusions based on that email is a little unfair. (By contrast, the journalists to whom that email was addressed had tons of context.)
I'm in the middle of writing a "what went wrong" piece, which I'll link to here, but I'll ask you guys to hold off judgement until then.
I don't mean to be a total dick, but when you're doing a startup and OTHER PEOPLE ARE DEPENDING ON YOU, going on a vacation of any sort right after you launch is just plain irresponsible.
People like you give the rest of us who are busting our ass and putting everything on the line to make our companies work a bad name.
Don't be so quick to pass judgement if you don't know the full story.