They actually have made quite a few changes, IMO. They used to run that same high ball screen 90% of the game and now run the weave at the top that allows them to get into a set play. They also pass the ball into the post and let him work one-on-one, which we hardly ever saw in the past. They are also utilizing a zone at times during the game, depending on the personnel they are going against and time of the game, etc. UND got in and out of their 2-3 zone all game vs. Weber.
I personally believe it was Jones seeing he needed to make changes based on his personnel, past failures, pressure or whatever. Gotta give him credit because this team is playing completely different than the past teams.