If anyone has this problem in the future and has the GT-7310 Samsung Galaxy Tab 8.9 wifi only. This is what I used to unbrick: http://forum.xda-developers.com/show....php?t=1406137
More precisely, I downloaded the link at the end of the page, downloaded the link that says: KJ5 for the 7310 (there is also a link for the 7300 version). I only used the sections regarding ODIN3: "FAQ regarding ODIN" and down further in the HOW TO section: [Using ODIN 1.85].
Install Odin via the link downloaded at the bottom of the page.
Download the firmware/rom that is given through the KJ5 link (it takes over an hour to download FYI)
I did not have or use any PIT or CSC files
I booted the tablet into download mode: press power button until Samsung logo appears -> Press the left or upper portion of the rocker button (depending on the orientation you are holding the tablet in) until two icons appear -> press the right/bottom portion of the rocker button to select DOWNLOAD mode -> connect tablet to Windows PC with ODIN3 installed and ON.
In Odin3 select PDA button and look for the firmware you downloaded via the KJ5 link (you will have to unzip the file first using the password: samfirmware.com), click on the .tar file (P7310UEKJ5_P7310XARKJ5_XAR\P7310XARKJ5_P7310UEKJ5 _HOME.tar.md5).
With tablet connected to computer and Oden set up as indicated, Oden should detect the tablet and indicate with in yellow in the ID:COM square on the Oden interface. At this point I pushed the start button and let it run until ODEN says "PASS". Then I disconnected and allowed the tablet to auto-reboot. It was a little slower than usual to reboot and I had to manually shut it down and reboot again to get mine to work and the system to fully boot again.
Anyway, I had a lot of trouble sifting through all the terminology and figuring out what was right for the scenario I was experiencing, so I hope this helps some noob out there that was in the same boat I was. Firmware/roms/flashing/etc. I didn't know what any of this was, so someone saying to flash my drive was of no use to me!
Anyway, good luck!