MacBook Pro crashed while deleting old backups off partitioned external hard drive. Now only recognizes windows formatted half of drive. Can the Apple side be saved?

MacBook Pro 15-inch, Mid 2010
Processor 2.66 GHz Intel Core i7
Memory 8 GB 1067 MHz DDR3
Graphics NVIDIA GeForce GT 330M 512 MB
Software OS X 10.9.5 (13F34)
I have an external hard drive:
2 TB Seagate Backup+Desk Media
Partitioned:
1TB - Windows NTFS
1TB - Mac (sorry I can't remember the formatting, whatever Mavricks asked me to use...)
What happened:
I was erasing 3 old backups from the Apple partition and my laptop crashed part way through emptying the trash. (it has done this many times before, where parts of the screen are frozen in square blocks displaced all over the screen. Screenshot not possible unless I use a separate camera).
When I force restarted my computer (holding down the power button) neither side of the drive was accessible. After running the Disk Utility and Verifying and Repairing the Disk Permissions and the Disk Itself (for the Windows side) I was able to access the Windows partition. However, upon attempting to do so with the Mac partition it tells me that it cannot be repaired. I have found many forums discussing SIMILAR situations but none with the same and here is why:
Up until this happening I could access ONLY the Windows partition when the drive was connected to either my Apple laptop in Bootcamp Windows 7 or my HP laptop in Vista, while my MacBook could access both sides of the drive. HOWEVER, after this crash, BOTH my Windows 7 and Vista can access both sides of the drive (so My files are still all there and accessible) but my MacBook Pro swears that the Apple partition is doomed.
Since the Apple side of my laptop is my primary workhorse I really want to figure out how to fix my drive.
So Questions:
1. Anything else I can provide to the experts out there to help me get this fixed?
2. Can I custom fix this via accessing the drive on either of the Windows systems?
3. Why would it suddenly show up in Windows when it became unaccessible to Mac?
Thanks All!

UPDATE:
It has been maybe a month since this happened.
After I made this post and was checking emails, walking away from computer, and then came back my Mac partition of the External Drive has shown up on the Desktop...
So, in the ever immortal way of asking the tech to come check the issue and the issue resolving itself, perhaps I should posted on the forum sooner...
NOTE: The disk still shows up as unusable in the Disk Utility and it appears that the files are read only (cannot make a new folder on this side of the external drive)
I still consider this a volatile issue because I do not want to lose the files on this half of the partition and I have not gotten a replacement drive yet (too much data to move to my computer and then format the current drive)

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1. Formatting my external hard drive to the FAT32 file system - however, it says that there are limitations with writing file sizes larger than 4GB. Is that true?
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