Well, that certainly sucks that the seatback table itself is broken
.
I would recommend checking out
car-part.com to see if by chance you can find any 2009-2010 Vibes/2009-2014 Matrices in any junkyards near you. Unfortunately, I have a feeling any junkyards would probably want to sell the entire seat though, but you never know until you ask.
Just a heads up for you in case you end up deciding to buy a brand new seatback table. Check out
GMPartsCenter.net's Facebook page as they pretty much always offer a discount code (lately it's been 5% off any order of $100.00 or more). It may not be much, but every little bit helps. Also, in case you're not familiar with their policies, they do not charge for shipping, but they do charge an $8.95 handling fee. Typically the 5% off discount is enough to at least erase that handling fee which is better than nothing. As I said earlier, I would definitely email them with your VIN to verify part numbers before ordering to ensure you get the correct part/s.