Tangelo has plenty of film for scouts to view, from his all-ACC season and from his year at PSU. I can't see another game played making a difference.
But what will likely make a difference would be any injury, even a slight injury, that would negatively impact Tangelo's performance at the NFL combine, or during PSU's Pro Day. The NFL seems to give a disproportionate weight to combine performances. So I believe he is doing the smart thing, and for all we know Franklin has given him advice to do exactly what he is doing.
Regarding the upcoming game, PSU has plenty of young DT's chomping at the bit to get on the field. And I can't wait to see how the young DT's perform against a quality opponent, as a preview of what we may see next Fall.........