not sure if it’s kinda the same issue, but I had a batch that I felt got a bit cooked over the July heat (sitting in a room with no AC). Not sure if counts as “salvaging” it, but I added more fruit, increased the batch from 2gaL to 3. Then to restart fermentation, I combined all of it with almost a gallon of a nearly identical batch that just finished up (some wine and yeast cake in bucket), then topped off with some more honey water to 4 gallons.
I just the other day racked that batch as it’s cleared now. I tasted it yesterday, I’d say the new fruit addition and diluting it covered up the issue, but it’s also a bit tart so I need to back sweeten some more.