lee
Village Idiot
Lifetime Member
Club Contributor
You may be able to "glue" the edges back together but I'm guessing the cords are cut too.
Without the support from the cords its not going to last long, even as a spare it might develop a pretty good bulge to the point of riding like a square tire when you need to use it.
Might need to stitch it up with zip ties first (Frankentire ).