Move tool (in UV texture editor)
 
 
 

The Move tool has different options when you work in the UV texture editor panel.

Retain Component Spacing

When this option is off, if you snap to a point (with grid snapping, point snapping, or pixel snapping), all selected UVs snap to the same point, bunching them up.

When this option is on, if you snap to a point, the selected UVs keep their positions relative to each other.