Think of it this way in terms of timing.
The IPO is in the end of March, typically there is a 6 month restriction for principal holders to be able to sell their stock after the IPO. That takes us to September, right at the height of election season when Trump will be at the peak of being in the news.
The stock peaked at $66 a share at IPO. Trump owns 78,000,000 shares worth about $5,148,000,000. Current prince as dropped to $49 a share or about $3,822,000,000. But nobody in their right mind expects that value to hold given the terrible income to expense ratio (it's running consistently at a loss).
So if the company can be kept alive even if the stock continues down to $10-$20 a share by late September, Trump can dump his 78,000,000 shares and still walk away with $780,000,000 to $1,560,000,000 before the election leaving investors with a worthless company that isn't making money.
Because what do you think is going to happen to stock prices is Trump looses? It will go even lower, which is why I'd expect him to pull out as soon as he can (legally or illegally).
WW