Nope. Unless the lockup is waived or modified by the board, Trump cannot "lend, offer, pledge, hypothecate, encumber, donate, assign, sell, contract to sell … or otherwise transfer or dispose of" his shares (this language is well-tested boilerplate for any lockup agreement). In case it's not clear, that covers using them to get a leveraged loan.
Far more likely is the board simply waives the lockup which frees him to do whatever he wants, in which case my bet is he just sells off some or all of his stake 'cuz who gives a shit if one of his cult members catches the falling knife.
But you gotta love the next paragraph:
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