Got home from work, did the Ab Ripper X.
FINALLY!! I was able to complete it without that tearing pain. I still felt it, but it was mild and I didn't feel like I was going to injure anything.
The best part?? I was able to complete almost all of the reps of every exercise. The exceptions were Mason twists (I did twenty rested ten and did the last twenty) and the roll up pulse up things which I just had to go slower than they were going.
So I guess regardless of the pain, my core is getting stronger for sure. The first time I did Ab Ripper, I couldn't even lift my legs up for the Mason twists, and I couldn't do the Fifer scissors at all.
Also ran in to a friend today, and without me mentioning P90X she says "something is different about your arms. They are either tanner, or more defined" I would like to believe what she was seeing was more defined.