However, I recently discovered a perhaps obvious method of regluing your print to the platform before the delamination has ruined everything.

I was printing a slim beam on it's side without sufficient brim when I noticed it starting to delaminate from the base. At that moment I squired a tiny bit of acetone on the platform, and used a stick to push down the print. It promptly reattached (even though the acetone only lasted a second or two on the 100 degree platform.)

That's all!
Worth giving a shot if you have a print you really want to reattach mid-print.