+1 on JMYoung's suggestion. Delete history is essential when working with Maya. Especially before saving your scene upon closing Maya/New Scene/Opening another scene. Delete history is under Edit > Delete by type / Delete all by type > History
Let's say your mesh at start looked like a cube. You apply a gazillion history states and afterward it looks like a sphere. When you save that scene and open it again Maya starts from a cube and goes through each history state one by one to try to recreate that sphere looking model. But... it fails somewhere along all…
You have like 3000 history nodes, its a good idea to clear history when modeling if you aren't going to be tweaking any nodes/deformers, or before unwrapping, rigging/skinning. I can't be of any help but Alias used to fix scene files on their forum when submitted, maybe Autodesk will do the same.
I can open it fine with 2013 64bit. The main structural mesh is completely screwed, though, a total mess of geo. You need to start deleting history more often as it has a tooooooon of nodes. That will often times mess things up when trying to re-open a file.
Kon Artist: I tried to open it in Maya 2012 64bit if that makes a difference? Scruples: Didn't know it was a big deal to clear history at the time :( So should I visit the Autodesk forums o you think? Grey: There are only models in the scene, there isn't any fancy setup. I don't really have time to restart.