This probably made it even more impossible, but that's the case even for domestic flights. Once your bags are checked in and on their way, there's no way that the agent at passenger screening can retrieve them from whereve they are in the airport at this point (indeed, possibly by now in an area governed by international treaties), allowing you to repack at the checkpoint and monopolizing the attention of at least one agent. I mean, they're understaffed as it is, with only so many people available for the essential duty of confiscating people's nail clippers and chuckling at naked pictures of you. If you had a SASE with you, though, they should have absolutely let you drop it in the mailbox and send it home to safety.
As for what to buy as a replacement, what everyone else saiddid you like what you had? Then buy another one, or use this as an excuse to upgrade.