I've learned some new information after talking to a friend who is a reporter, who is assisting law enforcement:
1. The real estate investor who was present at the sale of Ron's house, whose initials are "CS," and the notary public who took Ron's forged signature on the deed transfer, initials "PB," are in a lot of trouble right now. It turns out none of them checked ID or otherwise verified that the man selling the house really was Ron Shumway. This is, of course, illegal. The notary's title company is now liable and lawsuits for damages by the initial buyer of the house are quite likely. I'm told that "CS" is in trouble also for not checking any ID.
2. Because they are all in trouble for this big fraudulent sale, none of them are talking to the media and won't say whether Christian Colbert, or any other person of interest was the man who represented himself as Ron Shumway to them.
3. My reporter friend had access to Ron's Facebook posts which are not viewable by us non-friends of Ron's. As such, he was able to assist law enforcement in identifying the "cowboy" that Ron spoke of, and that he was allegedly going to see in Austin. That person has the initials "RM" and was referred to by Ron in public Facebook messages as his "new governor" -- a term that is baffling to law enforcement and my reporter friend.
4. This person, "RM," is no longer a Facebook friend of Ron's, and it is unclear when their friendship ended on Facebook.
5. It does look like the Facebook messages from Ron claiming to be running off the Austin to be with his "cowboy" did in fact originate from somewhere in Austin. My reporter friend says law enforcement has subpoenaed the records and is attempting to determine the origin point and IP address of those posts. (I'm actually unclear about why they believe the Facebook posts DID come from somewhere in Austin if the IP trace on the posts hasn't been completed yet.)
6. Ron was last seen by his neighbors on April 23, 2015, the day after his birthday. The following day, on April 24, 2015, someone claiming to be Ron Shumway resigned from Ron's job with DART via an email message to DART. Also around this time began the suspicious Facebook postings about Ron running off to Austin to be with his "new cowboy."
7. At some point after Ron disappeared on April 23, 2015 and the sale of Ron's house in June 2015, either Ron or another person entered Ron's home and removed Ron's personal belongings. It appears to police that either Ron moved his stuff out just as he said he did on Facebook (the message in May where he says he's "back in town" to pick up a few things), or someone deliberately staged the house to look as if Ron had moved out.
8. When the initial new owner, Sean Chien, entered the home in June after buying the home from a person claiming to be Ron Shumway, Sean Chien found the home full of trash and empty rum and beer bottles, and had to hire a crew of men to clean it out.
9. Police also noticed the Facebook post on Ron's birthday, April 22, 2015, in which Ron mentions a friend named "Terry" surprising him with a new flower bed. Police interviewed neighbors and investigated the house and determined there was nothing to this lead -- the flower bed was there and was legitimately created by a friend.
10. At this point, we don't know the identity of the remains found under the concrete slab in Ron's backyard. Police are still waiting on a DNA match, because traditional forensic methods didn't work to identify the remains.