I suspect it will be a case of all sorts of additional small measures.
AZ have been clear that they have different manufacturing streams for customers so...
a) the EU supplying factories were kept working for a little longer to make more, pushed a last batch;
b) BJ agreed to diverting some that hadn't been shipped here; the ones that would have caused more ruckus
c) AZ pushed through a last batch that would have been kept for quality control; just in case; wasn't quite ready on day 1 to be sent; or some such
d) any other dark corner you can think of was emptied
We have no idea how many doses come off in one production run, do we? This could be somethng that sounds like a lot but which is in fact just the tail end of a norma amount.
However it happened, somehow BJ and The Goviot managed to make themselves look and sound good. Which tells you how poor UvdL sounded!
Hopefully this will be the last of it. Everyone now has had the shock of having supply withdrawn at very short notice; AZ contracts seems to be well written; all other producers kept quiet so they are in precisely the same boat (which we knew but know we KNOW!!); we can just get on with getting on...