Just saw this on the BBC news site. Any thoughts on what prompted this and what the next steps are likely to be?

Radical Iraqi Shia cleric Moqtada Sadr says he is freezing the activities of his Mehdi Army militia for up to six months in order to re-organise it.
He has also called on all its offices to co-operate with the security forces and exercise "self-control".

Analysts see the move as an attempt by Moqtada Sadr to regain control over his increasingly divided militia.
Do folks agree with the "analysts" mentioned in the story? If the militia has fractured, what is the cause? Is it a good news story for coalition efforts?