I agree with those who said they just do this to update their lists, in case of injury. If Gost went down (God forbid; knock wood), they could make a call on the spot rather than have to have a bunch of guys in for a tryout on an emergency basis.
This is just the sign of a franchise that dots its I's and crosses its T's like no other. It's the bye week and they are doing their homework just in case.
I think they're having problems with the long snapping and that's throwing Ghost off. If you watch his snaps they all seem to be near the Zoltan's head which throws the whole timing of the kick off.
Finally, a voice of reason. If I'm not mistaken, coming into this season Gostkowski had the best FG% of any kicker while he's been in the league. 90% in 2008 on 56 attempts and youngest player in the top 25 ALL-TIME SCORING - yup, the guy just can't kick it straight.