Apparently awhile back the DA requested and was given $2 million in funding to add TEN people to her staff, specifically to probe this shooting and Goines' history of cases. I think they are serious, as well they should be.
That said, my cynical question is: Would they be as serious if the two residents had been killed but no police officers were wounded? I think if that had been the case, the blue wall would have gone up and would have been impenetrable. But, when a police officer's lies endanger other officers, then the gloves come off.
I saw that in operation with a small town PD near home a few years ago. I don't remember the specifics, but the general summary is that a detective did something that some other officers felt had exposed them to danger, and they basically told the chief they weren't going to work with Detective ___ any more. The detective was fired, he appealed and was given his job back, none of the other officers would work with him, so he drove a desk for two or three years until he was eligible to retire.