Yes. There are two options:
1. You can turn off individual actions using the *Handling properties. Example:
dp.eventClickHandling = "Disabled";
dp.eventMoveHandling = "Disabled";
2. You can also display a temporary overlay div over the Scheduler to prevent all clicks:
dp.uiBlock();
and hide it again:
dp.uiUnblock();
The <div> will be marked with "scheduler_default_block" CSS class so you can style it as needed (by default it is semi-transparent).