The Creative Drought
One would think that eliminating one author would streamline the machine.  One train of thought, no differences in views or plot ideas.  The series should have progressed neatly.  This wasn't the case.  Sadly, MS slowed to a crawl.  Matt was able to produce several episodes on his own, though at an abyssmal pace.  Unfortunately, this is where the records of the original copies would be helpful in determining dates, but we do not have this luxury. 

Matt was able to work at a meager, but at least continuous pace until the end of episode 14.  As we know from the text at the start of episode 15, Matt took a three month hiatus from writing.  Not intentional, he said, but rather due to a lack of any ideas.

One central point around Mr. Sandwich, is Trey's (Matt's character) lack of any substantial ideas.  But we are getting ahead of ourselves.

Once Matt resumed writing with Epsidose 15 again, the pace to the end was rather quick.  But not without intervention by Craig.  Matt again suffered a bit of a drought when he reached Epidsode 18.  Upon asking Craig for help, Matt was soon presented with a version of Episode 18, written by Craig.  It was written in iambic pentameter because Craigh wanted to show off.  Matt, at first accepted it at face value, and added it to it's rightful place in the Mr. Sandwich Series.  However, Matt soon felt he had lost control.
The Battle of the Authors