That is, I'm sure he understands that this action might be interfering with an investigation, and that it's reasonable to believe it was a willful act on his part.
Can you get into trouble for doing something like this?
On the other hand, it would be hard to prove any actual obstruction, since the service was shut down and all users notified about this whole situation.
To a lesser extent, anytime that politicians frame an issue with the two phrases "it's for the good of the public" and "it's not a problem if you aren't guilty", they're generally trouncing a constitutional right, or greasing the tracks for it to inevitably happen.