1)
What is the significance of "va'Tetzufenah"?
1.
Malbim: The flock needs to be gathered; the shepherd oversees their gathering. They were spread out due to lack of a shepherd, therefore Chayos ate [some of] them. This caused them to scatter more!
2)
What is the Nimshal of being eaten by Chayos?
1.
Radak citing Targum Yonasan: You will be handed over to all kings of the land for destruction, and were displaced.