I assume you are doing this so the player can't activate something the spacebar does...
Have the collision set a variable that is in the condition for the spacebar press.. ie. on-collision StopSpace=1.. in conditions for spacebar event add StopSpace=0:
On spacebar press - Action Do awesome thing.
Your collision event should be set to change it back to 0 after the 1.0 second wait. This way your not disabling the spacebar itself, just the events it activates.
Option 2: Put the spacebar event inside its own group and then have your collsion set this group "deactivate" for 1.0 second then "activate" again.