glad you had a good week 
out of that list, I would be wary of: (I am extreme with additives, have to be due to dd1's issues)
flavouring: the first itme, it is not listed as natural - definitely chemical MSG. bad news. the second time, it is listed as natural - this is stil MSG (usually made form concentrated bolied down pear skins, I believe). not great, maybe your ds might be able ot tolerate very small amounts (dd1 can have none at all)
fructose-glucose syrup. a lot depends on the source. very concentrated, not good news generally - sends blood sugars way out of whack.
the dried concentrated fruit will aslo really send blood sugars out of whac - and after a high there is always a crash and dip - bad news.
just generally, I am not entirely sure about the glazing agent either - isn't shellac a nasty varnish type stuff? (iirc, from youth, it smells horrid - must eb adifferent thign though)
sometimes, as well, there is no real reason why a dc cannot have a particular product (ie no "forbidden ingredients), but that product just doesn't sit right.
I owuld get oyur ds back to equilibrium, then re-test. if the same reaction, I would ban the product - it's not a treat if it results in bad behaviours and strained tempers all round.