Per Dylan Hernandez's twitter:
Eric Gagne was granted his release by the Dodgers.
This seems to be the end of Gagne's comeback, although the Rockies were interested in Gagne when he was signed mid-February.
Had he somehow broken camp with the Dodgers, he would have made $500K with another $500K possible in incentives. Gagne was sent to the minor league camp on March 15th