I'd get in touch with an engineering firm.
It doesn't cost very much to have them write up a procedure. Then all the liability is theirs as well.

You will likely be able to repair the fork. I base this on the fact that when you order forks of that magnitude, the eyelet for the fork-bar can be ordered seperatley and welded on where ever needed.

Just be sure to get the procedure first.
You could specify to have the procedure cover building-up fork wear as well.

On small trucks, simply replace, but in your case it might save you some time and money to get it fixed.

You'd also be ready for the next time a fork broke.