if he's there, he's going to take on primary carer role for the kids, and even if you DO get the seperated under one roof status short term, if you're working and he's the SAHP, he can apply for, and would be granted, the PPS, the FTB and child support from you...
Agghhhhhh! Thanks for the info guys. I'm off now to the gym to sweat and forget about all this **** for an hour or two.