If they are saying that with the wheels straight ahead and the threads being fairly even on the tie rods, the steering wheel use still very crooked; then recentering the steering wheel by removing the shaft is a viable option that the alignment shop is more than capable of doing. It all just depends on how lazy the alignment so is being in regards to "the steering wheel isn't straight. "
The key here is that steering rack to steering wheel connection needs to be broken and put in the "wrong" place for it to be an issue.
If the guy replaced your inner tie rods, and the other shop can align it, then I'm sorry, but you've got a total gaggle of idiots on your hand.
You can actually get your front wheels straight enough yourself, just break the jam nut on the inner tie rod loose and turn them so the wheels are roughly pointing forward and steering wheel is centered. Then use two tape measures on the tread to fixed points on the other tire to compare. Aim for about 1/16-1/8" toe-in on the average street vehicle (front measurement slightly smaller).
That's good enough to drive around on until you can find an alignment shop that isn't staffed by people who probably can't even balance a check book.