I hope this claims process works out after 90 days. I don't think they would re-open bitcoin central if they were going to run with the bitcoins.
That's 3 months where a very large amount of bitcoins are locked up..
What else would they do, assuming they're legit?
Decrease the waiting period, and thus decrease the security? I think 90 days is a good choice. If they're scammers, they're scammers, and there's nothing to be done about it, or at least the 90 day wait doesn't change much. If they're for real, the 90 day wait is 100% a good idea, for obvious reasons.