Given the current state of affairs regarding corporate personhood, how long will it be before we find a corporation using the insanity defense?

We have the Supreme Court having declared that corporations are people and should have the same rights. There are two cases before them now with corporations asking for religious freedoms.
The company involved in the chemical spill in West Virginia, Freedom Industries has filed for Chapter 11 bankruptcy protection but could they not have claimed they were mentally incompetent and if so, how could we hold them liable in a court of law? How would you certify a corporations sanity or insanity? By words? By deeds? Are there those out there who would, for a price, be willing to state such? Will a case where a corporation claimed temporary insanity make its way to the Supreme Court eventually? What are the ramifications for real people?