Ben, can you post the pictures Derek sent? I have several questions that I imagine those will answer.

First off, as you've found out, good luck getting a pool company to come look at a leak this time of year. Leaks are one of those high cost/low profit aspects. This time of year, forget about it.

Do you see water spraying into the pool, or out of the pool?

Depending on a few things, you may be able to dig out under the deck to reach the lines for repair.

Just need to see some pictures and I can help more.