Musk has published his margin loans backed by tesla stock. Those come with a clear margin requirement iirc.

It is then easy to calculate 'at this price, the loan will face a margin call'. Options pricing implies a probability of a certain price being hit by a certain time. So they imply a probability of the margin loans Musk has getting a margin call.

Ofcourse, getting a margin call wouldn't mean the loan falls through. Guessing that would require deep insight into Musks personal financials.