imagine driving down the road when ----
"there's a Howard Johnsons! want to eat some clams?" (an interrupt occured new direction required)
you turn the stering wheel to head towards the Howard Johnsons (the act of turning the wheel is the interrupt service) when the new direction is established you release the steering wheel car heads to the Howard Johnsons .
your holding the steering wheel on full lock and asking how can i straighten up without letting the steering wheel return to normal
its not goint to happen
apologies to frank zappa (billie the mountain)