Particles in my return jet

I've got things shooting out through my return jet. In this case, it's the larger granules from the CYA that didn't make it into my sock, but I also get large and small particles, as well as whatever is on the bottom of the pool, shooting out the return jet whenever I run the vacuum--even when the filter is freshly cleaned. Is this normal or is it likely that I have a tear in my filter? I did notice that the plastic part of the filter (around the bottom) might be damaged because it seems kinda loose and flappy, but that's how I bought it, so I assumed that it wasn't damaged.

If the filter is busted, are there are home remedies? Filters are expensive...
 
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