Certainly, see the blogs on my home page (which are severely outdated) for the jist of the system.
This system actually favored the 2H dog more than anything. This system says to select any 2H dog if the point spread is +7 or more. In the above cases, Buffalo, the dog was ahead at the half. The concensus is to normally pick the original favorite to cover the second half, but the system uses reverse psychology and assumes that the dog, who played a great first half will continue to play well.
2H road dogs last year went something like 14-2. This year has not been great to us so far.
In the above examples, Buffalo was the dog and while ahead at the half, they were installed as dogs or +7 or more. So the play was Buffalo +9.5 on the road, which covered.
Oakland was +10, and tied at the half. Oakland was installed as +7 dogs. The play was Oakland +7 at home, which covered.
Dallas was a -9 favorite, but was down effectively by 16 at the half. The dog, Carolina, on the road, was +8. Since Carolina was ahead at the half, and was installed as dogs of +7 or more, Carolina became the road dog play. This one lost.
Chicago and Detroit tied at 21. The Lions were 9.5 point dogs, and +7 dogs for the 2H. Since the Lions played well in the first half, momentum favored the Lions in the 2H. The play was the Lions +7, however this one lost because the Lions always seem to give up near the end.
The play has to do with the middle created when comparing the 2H lines to the effective score at the half taking into account the full game pointspread. The objective is to select the team that will miss the middle.
Example, Chicago was favored by 9.5. At the half, the score was tied, meaning that Chicago needed to win the 2H by 9.5 to cover the full game spread. So the question is, is it easier for Detroit to lose by 7 or less, or for Chicago to win by 9.5 or more?? The choice is Detroit +7.
In the Buffalo example, Buffalo was ahead by 4 at the half, making the effective NE line -17. So which is easier, Buffalo to cover +9.5 (given how they played in the first half), or New England to cover by 17. The choice is Buffalo +9.5.
When 2H lines come out, it is rare that the 2H favorite is not the original game favorite. The only way we play favorites here is that we assume the home team is favored by -10 or so, and the favorite is blowing out the dog, such that the favorite gets a line of -7 or higher for the 2H. Here, we'd play the favorite to cover.
Hope this helps.