Hi Chris,
Sorry to hear this mishap. The thin plastic separators between the contacts are very fragile, sometimes they break and move so they interfere with a contact. Carefully moving the plastic separator back in position with a plastic tool will help and after recovery discard the card.
Final solution is a datarecovery service, costly but if there are Lula videofiles on the card I am sure the community here will approve

I hope you succeed in retreiving your files.
Jaap