Could be a seized up caliper.
if the wheel cylinder was leaking, you would need a full brake job anyway. it's highly likely the brake fluid contaminated the shoes, which makes them worthless.I drove it in today. Thankfully the brakes still worked. It turned out to be a bad wheel cylinder. I had them do a whole rear brake job, since it probably never had one in the first place. I ended up paying more than I wanted to, but at least it's done and won't be needed to be done again for awhile. Thanks
Bryan