Hadn't seen this before, it seems rather troubling. Any time you have these kids of disruptions in public office re LE and/or local prosecutors, it doesn't bode well for solving serious crimes. I don't know if there's any data on the subject, but I'd be willing to guess it's one of the top 3 reasons why cases go cold.
JMO, in these cases, it sounds like the locals need some outside "help", meaning someone else needs to be overseeing this case. It's always difficult when small counties have to deal with major, random murders and abductions where the perps are unknown. Local LE and prosecutors are usually not well prepared for that kind of thing, no matter how many seminars they attend. Local politics and relationships always play a role for better or worse and the public spotlight is also a problem. It's something that needs to be studied and solutions developed.