Is my beer ruined?

Ok I came home to check my beer I brewed last week. This past Saturday I dumped the train (I have a 15 gallons in a stainless steel conical fermenter). And set my freezer to cold crash it to around 38. Then Sunday I discovered it was a bit too cold. So I turned on the heater. Then today on Monday I went to check it and the digital controller read 92. I immediately turned the freezer back on. Is my beer ruined?

I doubt it. But, I wouldn't leave it on that yeast cake very long. Let it settlefor a week or so and transfer it to a new secondary or keg to finish clearing. Taste it at that point and see.