Uncle Peter wrote:
http://youtu.be/zzkffGt0wNw

Can anyone explain the big ones near the end?

The big ones what?

If you mean the three hard disks, they were the same three that went in at
the begining.
The first shot in the 'aftermath' was showing the damage to the inside of
the microwave, unless you thought that a microwave had melted the disks?