Correct.
The thing about that 2nd game ( a 34-7 Silsbee win) was that McGuire did not play. He got hurt in final regular season game against Jasper. Most folks thought Silsbee was doomed facing a Nederland team that ripped the Tiger defense thru the air and not having their star RB where they needed every single yard and score to beat the Bulldogs earlier in the season.
What happen was a change in defensive strategy. Silsbee played zone coverage the first time and Spell picked them apart. In the playoff game Silsbee went to man coverage and brought the house on most if not all passing downs. Silsbee sacked Spell 10 times in that 2nd game. Also, Silsbee RB Rhone had 194 rushing yards and 3 TD's.