Corrected entry: In the scene where Dorian and Angus are with the dead body in the morgue, Angus lifts up the stiff and it bends at the waist. Rigor mortis would have been fully set at this point (the body was in a suit ready for a viewing) which would have made it impossible for the corpse to bend at the waist.
dbfilms
17th Apr 2011
Correction: Depending on how long the body was held before funeral services, it is likely and expected that rigor would have subsided entirely. According to Wikipedia, rigor mortis sets in within a few hours of death, and has subsided by about 72 hours. This is very plausible because there was somewhat of an investigation, which would have forced authorities to hold the body for longer before interment.
Kimberly Mason