Seeing the damage his logic has caused provides the emotional "shock" needed to break the Speed Force's hold and return his feelings. Other Shows with this Episode Title
In this emotional aftermath of the hospital shooting, the doctors struggle to return to "normal." [S7E2] Shock to the System
Meredith continues to hide her pregnancy and subsequent miscarriage from Derek as she struggles to get cleared for surgery. She eventually breaks her silence when she realizes she can't handle his reckless driving anymore. Seeing the damage his logic has caused provides
The medical case of the week involves a group of flag football players struck by lightning, forcing the doctors to work together under extreme pressure. The Flash (S7E2) [S7E2] Shock to the System