If it was my car I would put the parking lot attendants at fault. The mirrors are designed to be break-away not foldable.

Foldable mirrors do not spring back to the normal position where break-away mirrors do spring back to the normal position.

For replacements you can check e-bay or a salavage yard.

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Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles