A pre-emptive coup against a coup within a coup?

✚  No Reason to Celebrate, It's Just Another Coup

Wael Iskander offers a not unplausible explanation for yesterday's news in Egypt — what may have pushed some generals to go against Tantawi and Enan was that they felt a pre-emptive coup against a coup within a coup was necessary to prevent Tantawi & co. leading the military into an untenable situation.

So much of what has been happening has been conducted with much secrecy, that is why all we have today is analysis and speculation. However, it does seem that the likely scenario is a coup to counteract a coup as Hesham Sallam explained:
“Al-Assar, Al-Sisi and others led a coup against Tantawi and Anan in order to preempt a prospective coup attempt that could have gotten the army into uncertain political confrontations—specifically confrontations that could have led the military establishment to lose everything vis-à-vis the MB. Consistent with this theory is the fact that Al-Dostoor newspaper was confiscated yesterday after effectively making a public call for a coup--which suggests that some elements within the SCAF had been prodding their allies inside the media establishment to begin promoting the image of popular support for a coup”
It is clear to me that something was planned for 24 August 2012 and that is what was pre-empted. The Muslim Brotherhood (Morsi) had to have the support of some elements inside the army so as to come out with this decision.
There had been calls for mass protests against Morsi and the MB and the Brotherhood on the 24th, backed by some of the press and political establishment. Maybe this is what forced their hands.