I just stumbled upon this post at the sister site PS3Trophies.org :
A member named "gramreaper" sent an email to EA regarding the glitched achievement (trophy on PS3) and got an answer where they say they are aware of the problem.
Quoting part of the reply by EA. "I understand your concern and current status of trophy glitching is confirmed, it has unlocked early for some people and has not unlocked for the majority of others."
Let's hope EA manage to get CrySuck to fix this. Cause I'll sure affect the sales for Crysis 1 on PSN/XBLA in a negative way.