Looks like Blake was credited with loss of yards on his fumble, which is inaccurate.
Well, sort of inaccurate - he should get credited with a loss of yards to the point where he fumbled but not to the point where the ball was recovered, which is what appears to have happened.
However, it looks to me like he should have gotten 30 yards back. Here's Blake's rushing plays:
3rd and 1 at ALA 29 -- Blake Sims run for 3 yds to the Alab 32 for a 1ST down
1st and 10 at FLA 32 -- Blake Sims run for a loss of 3 yards to the Fla 35 Blake Sims fumbled, forced by Leon Orr, recovered by Fla Dante Fowler at the Alab 35
2nd and 7 at FLA 47 -- Blake Sims run for 6 yds to the ALABAMA 47 for a 1ST down FLORIDA Penalty, Personal Foul (Darious Cummings) to the Fla 32 for a 1ST down
1st and 10 at ALA 17 -- Blake Sims run for 9 yds to the Alab 26
2nd and 10 at ALA 47 -- Blake Sims run for 9 yds to the Fla 44
1st and 10 at FLA 40 -- Blake Sims sacked by Alex McCalister for a loss of 8 yards to the Fla 48
3rd and 1 at FLA 21 -- Blake Sims run for 2 yds to the Fla 19 for a 1ST down
2nd and 10 at ALA 20 -- Blake Sims run for 24 yds to the Alab 44 for a 1ST down
If you sum 3, -3, 6, 9, 9, -8, 2, and 24 you get 42.
Since Blake is currently credited for 12 yards rushing on 8 attempts, it seems like he should get 30 back, not 27.