Someone else may have already thought this and sorry if I've missed it- I think it could be possible that as Camblos has built his case for JM, he wants to paint a consistent picture of his client; feels in order to win the HG case he should manage JM's image throughout both cases at this point. For example, if he's going the mental illness route, it would be harder to take that angle in HG case if another DA in Fairfax approached it differently for that case. JMO.
Boy, if this is the case, Camblos may find himself over his head and drowning with trying to represent JM consistently in multiple cases....