If true (but MBV screenwriter Todd Farmer said it was actually filmed in 2-D, with 3-D in mind, and converted), they did a horrible job. The 3-D in that film was subpar. If you're right and it was actually filmed in 3-D (why would the writer claim it was filmed in 2-D, though?), why were most of the FX so tepid?
How was Saw 7's 3-D? I'm tempted to pre-order without seeing the movie first. Is it worth it (the 3D FX, not the movie itself)?