I noticed that too! There were plenty of Large Totes available in cammello and black color ways, except for brandy. They were available all the way through, last I checked around 7am EST.
A friend of mine was still debating if she should get the large tote and suddenly, they were all sold out at the very same time?!?!
Same goes for the Large Canvas Buckets. All were available and suddenly after 9am or 10am, all sold out!
I wish that MG would have kept them on the site as some people might have been considering them and wanted just the experience of ordering from the manufacturer (& get the pink box!

).
There have been lots of comments online about how the quickly sold-out stock at each re-launch is just a wicked marketing ploy as many people are disappointed they could not get their bags despite being in cart 1-2mins within the launch time.
I didn't want to agree with all that negativity but somehow, with them taking off the Large Totes all at once suddenly, I can't help but feel now that there is some element of truth to that -- i.e., make everything sold out and thus, that much more coveted.