That was my take from the start. Shot cop near a bank, some others, a couple of others dead, and then took shelter after botched robbery/escape at Planned Parenthood. No one in the PP building shot or killed. The fact that it was Planned Parenthood is no more significant than if there had been a Radio Shack there instead. It is just the building he ducked into to try to duck police.
Maybe he is just trying to use it as part of a 'deal' to give the story they want in order to get a lighter sentence, which would make him a useful idiot after the fact. Cop Killers don't get a deal.
Or like I have been posting maybe he was going after PP but was stopped by a cop who saw him in the parking lot with a rifle
The truth will eventually come out