Did I destroy my starter:(?

House was a bit cold, I turned on my oven and left it on for a few mins, turned it off then put my starter in the oven. I left it there for maybe 45 mins. 

Starter was over 110 degrees when I took it out, and developed really off flavors (bitterness mostly). Seemed alive. I have fed it twice since then, it has not lost its action, it rises fine but bitter profile remains (1:5:5 feeding ratio). 

Is the starter gone and I need to start from scratch, or will this fix itself? Anyone done anything similar?:(