It was an 'ok' filler episode. There were some lame bits but nothing killer like Professor Princess or yet another 'Sari and her robot friends' episode.
The origin of Dirtboss was a bit odd since unlike the other 'newly borned' bots who kind of learned as they went, he already had a fully defined personality. However his dynamic was fairly good as he gave more focus to the Constructicons instead of having them as drunken goofs.