OK, then the timing of when it became common knowledge that Scott had alerted law enforcement becomes a more important detail to fit it with the threat letter mentioning a letter written by Brittney.
When was that detail first reported in the media? And what time lag prior to FOX10 or whoever stated it first in the media do you think the family might have known before press did? Was it reported first in Andrew's special coverage on Brittney in April 2013?
If that recently, (or that long after I believe the threat letter was written Oct 2012 and Dustin's night escapades/bond condition violation arrest is related is correct), then Scott could have still been trying to cover his own whistleblower actions by creating a Brittney letter in Oct 2012. And he either conveyed a lie to the letter writer or is the letter writer?
Does the timing work and does that fit the option you suggest?
http://www.fox10tv.com/news/special-report-missing-brittney
Updated: Monday, April 29, 2013, 10:19 PM CDT
Published: Wednesday, April 24, 2013, 8:19 AM CDT