I think what happened is you are basically screwed..
Your snapshots are there, but VMware didn't commit the changes, but it removed them from the VM window. You need to find other files elsewhere on this datastore you can delete.
Or as another poster suggested, clone this VM as is then delete original... I think these snapshots are still valid, the commit didn't have room to merge the files with original VMDK.. I hope you have good backups.. your VM may very well be hosed...