Gotta move a trailer with a bad spindle about 60 miles.
A new trailer is on order, just want to get this one to my dock.

I plan to travel early in the morning (5:30-6:00) to avoid as much traffic as I can, and drive about 30-40 mph.

It looks like all of the load is carried on the backing plate.

Would "strapping up" the axle help take the load off of this wheel?

Is it a triple axle? If it's a single axle trailer that is empty, that's a very viable option. however if the spindle is bent (how'd that happen?) then the backing plate is probably bent. If the backing plate is bent and you use the emaxle then you're going to be riding on the edge of the tire and asking for a blowout.

If its a triple axle, just strap the axle with a ratchet strap up to the frame and you should be fine for a short drive.. Even if its a tandem and you're not overloaded, you can make that trip.

I'm with Waterboy. If the trailer is empty, just strap up the bad side & roll on. If it's loaded, do the same, assuming a triple axle setup. If it is a tandem, I think I'd still just try to strap up the bad side & see how it looks.
I've made it over 200 miles on 5 wheels, loaded & it was a rear axle.
That thing you are looking at may cause more damage than you already have.

I'm with Waterboy. If the trailer is empty, just strap up the bad side & roll on. If it's loaded, do the same, assuming a triple axle setup. If it is a tandem, I think I'd still just try to strap up the bad side & see how it looks.
I've made it over 200 miles on 5 wheels, loaded & it was a rear axle.
That thing you are looking at may cause more damage than you already have.