Remember, we are speculating, but in simple terms, and of course depending on the size of the loan, Stu/SAFC will not be able to repay the loan without progress.
Going up massively boosts finances, Stu can pay. Staying down, he likely can’t and as such his ‘equity’ or part of it, in this instance his stake on the club, pays the debt.
So, in a scenario when he can’t pay, the Americans start to buy into the club by taking a percentage of his ownership.
On the face of it, the winners are SAFC, as if we are speculating right, the clubs arse is covered.