Besides Auburn/Miss. St., has any football game ever ended with a 3-2 score?

Yes, it has happened 6 other times in NCAA history.

Clemson 3, Duke 2 - Oct. 16, 1965 at Durham, N.C.

TCU 3, Texas 2 - Nov. 12, 1960 in Fort Worth

TCU 3, LSU 2 - Jan. 1, 1936 at New Orleans, La. (Sugar Bowl)

Iowa State 3, Kansas State 2 - Nov. 20, 1926 at Manhattan, Kan.

Iowa State 3, Kansas State 2 - Nov. 9, 1929 at Manhattan, Kan.

VMI 3, Kentucky 2 - Nov. 2, 1912 at Lexington, Ky.

This game also came very close to ending in a 4-3 final score. In the 4th quarter, with Mississippi St. down 3-2 and on the Auburn 45 or so, facing a 4th and 15, I was gearing up for a pooch punt that would pin Auburn back and allow the possibility of another safety. Inexplicably, Sylvester Croom went for it, to the shagrin of not only me but the color commentator, who lambasted him for this decision. Sure it didn't make sense football strategy wise, there was plenty of time left to force a 3 and out and get the ball back, but it also killed a relatively decent chance that the bulldogs would finish with 4 points, which also should've been taken into account. In conclusion, fuck Sylvester Croom.