The doors just keep swinging at MySpace. MySpace has confirmed a Techcrunch post that co-president Jason Hirschhorn is set to announce his departure tomorrow, nary four months after accepting the co-leadership role with Mike Jones.

Jon Miller, chief digital officer of News Corporation, released the following statement:

We fully respect Jason’s decision to leave and his personal desire to return to New York. As many people know, Jason is like family to me, and as expected, he’s done everything we asked of him and more. We’re incredibly grateful for the passion and enthusiasm he brought to the company. And as I know Jason agrees, Mike Jones has done an outstanding job leading MySpace into its next evolution and is the right person to take the reins. There are no plans to bring in additional management.

Techcrunch says Jones apparently will be named CEO as a result of the move. It’s not yet clear what impact this will have on the direction of the company or the many rebuilding plans it has in place, although sources expect very little diversion in the short term.

Its affect on employee morale is another story, to say nothing of the view that MySpace is a sinking ship.

As for MySpace Music, it seems to be the only division of the company that’s actually hiring and keeping employees. The company earlier this month brought in former Veoh CEO Dmitry Shapiro as chief technology officer, and MySpace just this week relocated the MySpace Music offices into the main MySpace building in Beverly Hills after operating remotely for years.

Billboard recently visited the new MySpace Music office for a background preview of the many changes it has ahead for this summer. Some media voices, like Techcrunch, advocate spinning off MySpace into a private company from NewsCorp. If the main site continues to lose members and executives, perhaps an even better step would be to condense MySpace into the MySpace Music unit and let it focus primarily on the one area that has any traction left.

The challenge MySpace Music faces is to decide exactly what kind of music service it wants to be. It’s not positioning itself as a music management service like Spotify or Rhapsody, where all you do is log in and stream songs. It’s taking a far heavier social aspect to the online music space that is far beyond what these other competitors are doing. Can it continue to do so with the continued deterioration of the MySpace proper social network? That’s unclear. But based on our visit, the team there is showing no signs of holding back.

The employees there speak very frankly about MySpace’s challenges. But they remain attracted to the company for several reasons. First is the challenge of turning around a struggling company. Second is the ability to reinvent a new social/digital content service that, with 30 million members, operates at a scale far greater than any startup can achieve out of the gate. T

Third is the ability to work on Web 2.0 style initiatives in L.A. rather than make the commute to San Francisco that so many have tried. A fourth reason was the belief in the company's leadership. Jones and Hirschhorn attracted a loyal following from employees that had worked with them in previous roles.

This last benefit will be sorely tested with Hirschhorn leaving. It’s now up to Jones to take on the mantle on his own.

As for MySpace founder Chris DeWolfe, he’s now the head of a social gaming venture called MindJolt.

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