This isn’t about him paying his legal bill, it’s about a bond to appeal.
Using all your cash to appeal is a bad idea for ANYONE
if you lose the appeal, you can then decide on your cash and asset mix to pay it off.
Edit: think about it this way. If you can put up asset collateral on a appeal that’ll take a year, that’s a whole year you could be earning interest on the cash and have cash for an emergency. Maybe you go half and half so you don’t risk as much of the other assets. Leaving yourself with no cash is just bad. He’s in a really bad situation so maybe he only has bad options, but that doesn’t mean it’s not bad.