Well, I was one of the 157,000 fans at the game. Regarding the failure to sell the game out, you have to remember that the Bills played Houston on Sunday night of the last week of the regular season. If they had won, they would be the #1 seed with a bye during the WC weekend. Of course, Kelly got hurt, and the Bills lost. The comeback game was on the Saturday of the same week (if I recall correctly), and the Bills ticket office was closed part of the week due to New Year's. At that time, most of the sales were by paper tickets at counters, and it was virtually impossible for the team to sell the number of tickets that they had in the 2-3 days between the Sunday night game and the blackout deadline.
I must admit that I am going off of memory here, and I may be off on some of the points (what can I say - I am old & it is late!). But, I am pretty sure that it was virtually impossible for the Bills to sell tickets fast enough to beat the blackout deadline.