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.
(..) actually want a war? -We'll show 'em. -Fiddle-dee-dee! War, war, war! This war talk's spoiling all the fun at every party this spring. I get so bored I could scream! -Besides, there isn't going to be any war. -Not gonna be any war? Why, honey, of course there's going to be a war! (..)1939 Gone with the Wind