Although the 2010 game was a modest success, selling 1.3 million units in the U.S. from its November launch through the end of that year, 2012's sequel sold only 270,000 copies during the comparable time period, according to a person with access to sales data from research firm NPD Group who was not authorized to share it publicly.

It's unclear whether Spector and his Texas-based Junction Point Studios will continue working with Disney. John Pleasants declined to discuss the topic and Spector could not be reached for comment.