Gears where already down. According to your writing of events. So they have not been out of there locks. So how could they collapse.
You make it sound like it was a sure thing that the gears would not collapse. Having a retracting problem I think you would consider all the consequences that may follow. There have been many situations where gear has collapsed when the indicator showed LOCKED, and many when there was not a green light but the wheel was indeed locked.
Being cautious I think you would not risk your passengers and always think about the "What if" theory.
That's at least what the OS crew did. I think it's quite reasonable.