"A lot has happened in the past year and he decided to go to the Dominican," Kinzer wrote. "We aren't sure when or if he will return this year."
Kinzer did not specify what he was referring to but indicated there were things of a "personal" nature the pitcher wanted to deal with. Marmol, 31, seemed like a worthwhile signing for the Reds, as he performed well in winter ball this year and had been throwing hard.
"He just wants to take a mental break," Kinzer wrote. "Physically he is fine. He was still throwing in the mid-90s."
Marmol's arm has never been in question, though his stats in his brief stint at Louisville reflected both the live arm and control issues, as he had six strikeouts and six walks in 3 2/3 innings at Triple-A Louisville. Earlier, he was 0-3 with an 8.10 ERA for the Marlins.
Kinzer acknowledged the Reds weren't pleased when Marmol left the team but said it wasn't accurate he was portrayed as going AWOL.
"We notified them he wanted to leave and take a break," Kinzer wrote. "They weren't happy. I understand them being upset but he is doing what he feels is best for him."