Why is my UI frozen during this?

gistfile1.txt

    [UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationOptionAllowUserInteraction|UIViewAnimationOptionBeginFromCurrentState animations:^(void){
        self.clippingContainerView.alpha = 1.0;
    } completion:^(BOOL finished){    
        [UIView animateWithDuration:0.5 delay:5.5 options:UIViewAnimationOptionAllowUserInteraction|UIViewAnimationOptionBeginFromCurrentState animations:^(void){
            self.clippingContainerView.alpha = 0.0;
        } completion:^(BOOL finished){    
            self.state = cvcStateHiddenControls;        
        }];
    }
     ];