Who knows? In a crisis, sometimes the ability to act fast enough or think straight leaves you. Look what happened to EJ after all.
You can also see John in the GSC when Mr. Guggenheim and Mr. Giglio make their famous announcement. The scene was cut in length in the end, but can be seen on James Cameron's Titanic Explorer. John and Ben have a brief conversation, shake hands and head their seperate ways. Have a look for him!
I didn't know there was a fight scene between Lovejoy and Jack that was omitted. Man, that would've been a good scene to put in. That movie probably could've used a good scene like that. As for the bloody face, is it possible to assume that his face got bloody from running around the ship, bumping into things, etc. While the ship was sinking, everyone was being pushed, shoved, and it was very easy to get injured.