How frightening! I'm glad for the happy ending.
I like the plastic dog crates for emergency parrot transport. They take some modifying...padding and paper over towels for the bottom, a perch, a way to attach food and water cups..but they are sturdy, lightweight, and strong. You have to get the right size, and be sure they can't fit through the openings in the side. They won't come apart in use, you can lock the door shut, they can handle something being accidentally stacked on top, they are closed in a bit so the bird feels safer. Not expensive either. I bought Gus's from chewy.com and they worked with me to pick the right size and features, and were cheaper than anybody else.
Glad you got him back and someone was willing to help !!
Agree completely on the plastic dog / cat crates. A few simple modifications can turn it into a really nice carrier or emergency shelter and are mush less likely to spring open.
We had to get something that is much larger for Arika our B&G, plus we needed the wire framed sides because Macaws can go through a plastic cage very easily. We even made the top handle a perch for her so she cam be comfortable while in the Vet exam room. There are plenty of designs available.
Try to find one that does not have a top that comes off because you may find yourself in the same situation with an escaped toddler

Good luck.
We plan on doing a more detailed thread on her carry cage and will post it in the Cages forum as soon as we can.
Thanks
Kelly Karl and Arika