It's a difficult one to prop but not impossible. Quite likely the inner and outer leaves may not have been 'in synch' either, so beam alignment would have been a faff.
Upon discovering the ledger plate situation, we'd have started at one end and inserted strongies and used other means of keeping the bricks in place, as we worked our way along the demolition.
It's a tricky one to make good, once you lose the bricks though.
This is something structural.
Before they cover this bodge, get at least a second opinion from a reputable builder or better, a structural engineer.
If you're going down the building notice path, the council might advice.
I say "might" because some inspectors are better and more helpful than others.
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