This VM is kind of unusual.
Did you convert the VM directly to the ESXi host, or did you convert it to e.g. VMware Workstation and upload it to the host later?
The "twoGbMaxExtentSparse" is not how this should be and the default controller type for Win2003 is "lsilogic" rather than "ide". I'd recommend you backup the VM's files, before taking any action. What I think could be done (after the backup) is to revert the VM to the base disk and run the Converter again, selecting the proper controller type and destination.
According to the file list it looks like the VM never really ran with snapshots. Can you confirm this?
André