Mike Smith scored 18 points and added 15 assists for the Wolverines.
The Terps trailed the Spartans by 12 after 10 minutes.
The Terps enter the Big Ten Tournament on a two-game losing streak.
Morsell, Eric Ayala and Aaron Wiggins were named All-Big Ten honorable mentions.
The Terps made three field goals in the game's final 10 minutes.
Seth Lundy scored 31 points to lead the Nittany Lions to victory.
The Terps gave the ball away 15 times in Wednesday's loss to the Wildcats.
The loss snaps the Terps' five-game winning streak.
The Terps went on an 11-0 run in the game's first four minutes.
"It’s just a maturation process."