My opinion
there are two points I would like to make about this film:
a) I liked it. Maybe it's no masterpiece, but it's an intriguing film full of suspense. It's well-acted (Sandra Bullock overacts in every single shot of the Blind Side and she got an Academy award for that). I also liked the scenery and the landscapes, especially the one from the plane wing and the one from the church bell. Psychologically, the characters are not heroes, just normal people through very stressing situations, who wouldn't go a little bit crazy?
b) It's a pity it underperformed so much at the big screen. The special effects were realistic, the film has a big name from Spanish cinema (Maribel Verdú), a quite attractive man to the public opinion (Antonio Garrido) and a hot model (Andrés Velencoso). So, why was it such a failure financially? I've seen much worse Hollywood crap getting to the audience's pockets. Why are there not even comments on imdb? It's a pity that there's so little interest from Spanish audiences concerning Spanish cinema. And no, I don't think it's all bad.