[coyl]

When frighten, they tend to run away and hide first. Once captured, in order to free itself, it will spill out all the contents in its pouch in an effort to make itself even smaller so it can wriggle free and escape. This is normal behavior. This means the hamster is frighten, and have not trust / bond with its owner.

This behavior normally found in Roborovski.

But as yours are Winter Whites. I am very curious why.

Winter Whites will normally scream first, bite and wiggle free.
Syrian will do the same.
Campbells will normally bite first to free itself.