Snowball (effect) and Out Of Hand

I have two idioms for today.  The first one is Snowball (often referred to as the "snowball effect"), which means:
A process that starts from an initial state of small significance and builds upon itself, becoming larger (graver, more serious), and perhaps potentially dangerous or disastrous, though it might be beneficial instead . The common analogy is with the rolling of a small ball of snow down a snow-covered hillside. As it rolls the ball will pick up more snow, gaining more mass and surface area, and picking up even more snow and momentum as it rolls along. This idiom is frequently a verb: snow·balled, snow·ball·ing, snow·balls

The problems facing us snowballed by the hour . First, we couldn't find the car keys, then we got stuck in traffic, then we got a flat tire. In the end, we were over three hours late.
The 2008 recession in the United States is a classic example of the "snowball effect": The government responded by borrowing money until investors became anxious, thus dropping government bonds, which drove prices lower and rates higher. Unfortunately, that caused the government to decrease spending and prioritize paying back investors, which made the economy worse, creating more unemployment, debts and thus increasing the national deficit.
His success just snowballed.  First he opened one restaurant and before you knew it he had several.

Synonyms: domino effect, a vicious circle, a spiral of decline, (a virtuous circle in circumstances where the "snowball effect" is a positive one). escalation, upsurge, enlargement, developmental increase.

Today's second idiom is Out of Hand, which has four meanings:

1. Out of control

Employee absenteeism has gotten out of hand.

The situation in the classroom is getting out of hand. The students will not be quiet.

The riots got out of hand and several protesters were injured.

2. Without delay or deliberation. Without consideration or explanation

My suggestions were dismissed out of hand by my employer

The committee rejected the plan out of hand without even considering its possibilities.

 Moving to London is certainly a possibility - I wouldn't dismiss it out of hand.

 3. Uncalled for or improper; indiscreet. 

That statement is out of hand.  I demand that you retract it immediately!
That demand is out of hand.  It simply won't be considered.

4. out of somebody's hands: unable to be influenced by somebody

 The is situation is out of our hands.  Only God can decide. 

Brendan Monroe, 2005 "When Things Get Out  Of Hand"