I think Occam's Razor needs to apply here. We have a coin with "roadkill damage" on one side, and a "possible strike through oil" on the other. This would mean two unusual events would have happened to this coin.
It seems to me to be far more probable that a single unusual event has occurred, and that it occurred post-mint ie. damage, not mint error: whatever did the "roadkill damage" on the obverse, also flattened the legend and impressed a reverse image of the reverse legend onto the reverse. I'd assume two of these coins were either struck together with something post-mint or compressed in a vice-like arrangement.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis