I agree, I think last night's episode was the worst this season, coming off the backs of two of the best.
The protagonists having epic wins and fails is kind of subversive, in a way. You don't expect either one. But when the show is Win-Fail-Fail-Fail-Fail-Fail-Fail-Fail-Fail-Win or some slight modification of that, it becomes a little too formulaic and takes away from the moment to moment jokes. Of which there were less last episode.
The 'person swearing in front of kids' schtick was done better in Curb, where Larry would sing the Officer Krupke song a little too loudly. But it was funny there because he's too oblivious to properly defend himself and the kicker was he wasn't actually swearing.
There's also the minor problem of holding down a delete key probably not being an actual catalyst of deleting FTP processes already in progress. For a show that gets its technical jargon so close to the mark, this entire scene was '2 idiots 1 keyboard' bad.