I got it towed to a shop. I don't have an official estimate yet but the shop manager gave me a ballpark figure of $2,500 in parts/labor. Just what I needed. Since it's now Sunday, they won't even be able to get parts until tomorrow. Probably the earliest we'll get back on the road is Monday afternoon.
For now, LARM and I are in a motel on the west side. It's snowing like crazy, too. It's just as well that we're not having to drive in this mess, but it's one thing to not be making any/much money and another to be incurring costs op top of that. If all of this wasn't bad enough, my toothache from Christmas has returned with a vengeance.