I think phone calls are probably the best way to get information/updates from the various PDs around the country... I myself have submitted several potential matches to different PDs throughout the country via email [because I work FT and am generally unavailable for long explanatory phone calls during daytime hours]... and unfortunately have not received any responses, much less follow-ups, at all.
I think they just fall to the bottom of the pile.
That said, I live in Henderson NV, and if you like, I can try to call the Henderson PD this weekend to see if there were any updates and to request the info re: the exhumation
Unfortunately I was sick the last 5 days , and today I work and then I have an evening event tonight... so I will have to try to contact the Henderson PD tomorrow.