If those things are detonated by radio control (which I assume they are) one can only wonder if any members of that household participated.
Something led the Marines directly to that house....
This was a LOS IED (which means the detonator was close by...and very well could have been in one of these houses) - It is clear this family was aware of this planted IED...and knew exactly when it was going to go off. That speaks volumes.....especially when one understands Haditha, and how the Marines working this city know much more ground level Intel then any of those reporting on the place do.
We have now learned the doctor who examined the bodies was also apparently arrested prior by U.S forces (for being supportive of insurgents) and thus clearly had an axe to grind (one could easily speculate).
There is much more to all of this then everyone is aware of yet....but without question these Marines deserve the benefit of the doubt.