He 's also following a few other mainstays out the door .
Earnhardt Jr. elected to leave DEI in part because he could n't secure a controlling stake in the company from his stepmother , Teresa .
Earnhardt Jr. 's also following a few other mainstays out the door .
Earnhardt Jr. elected to leave DEI in part because he could n't secure a controlling stake in the company from his stepmother , Teresa .