Well, PTOI still has a market cap of $7.3M. There could be some practical reasons to cause Heddle to prefer to shut things down. But without a reason, I think it would only be practical to keep things going until the market cap falls more in line with its true value of zero.

As long as things continue as they are, Heddle has a chance to find other investors to privately buy a few thousand bucks worth of shares at a discount. That means chances for more money that Heddle can make vanish via "SG&A".