You should try to prepare them for your decision instead of just 'springing' it 'on' them suddenly.
The rope stretches and 'springs' back into shape. [=returns to its original shape]
New housing developments are 'springing up' all over the state.
(..) No doubt named for your father. Yes. Uh-huh. Well, Mr.Turner, I've changed me mind. If you spring me from this cell, I swear on pain of death I shall take you to the Black Pearl and your bonny lass. Do we have an accord? (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl