ScrollView enabled/disabled in different state

[bluebookbi]

Hello, Hebert! :)
First, I really admired you created this amazing project for me and others. I created custom cell, each cell has vertical scrollView as whole view. When I'm at main page, I could click any single cell then it shows out the full-screen cell. Problem comes when I pinch the cell to go back to the main page, which I couldn't tap it to let it shown anymore. Hope to get your help soon. Thank you very much.
Some of my applied code is shown below.

// ConanCell.m - my custom cell

• (void)awakeFromNib{
  self.smallView.layer.cornerRadius = 4;
  self.scrollView.userInteractionEnabled = NO;
  self.scrollView.scrollEnabled = NO;
  [self.contentView addGestureRecognizer:self.scrollView.panGestureRecognizer];
  }

// HASmallCollectionViewController.m

• (void)collectionView:(UICollectionView )collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
  {
  ConanCell *cell = (ConanCell)[collectionView cellForItemAtIndexPath:indexPath];
  cell.scrollView.userInteractionEnabled = YES;
  cell.scrollView.scrollEnabled = YES;
  NSLog(@"Selected at %d",(int)indexPath.row);

  UIViewController *vc = [self nextViewControllerAtPoint:CGPointZero];
  [self.navigationController pushViewController:vc animated:YES];
  }

// HATransitionController.m

• (void)endInteractionWithSuccess:(BOOL)success
  { ...
  else if ((self.transitionLayout.transitionProgress > 0.25) && success)
  {
  [self.collectionView finishInteractiveTransition];
  [self.context finishInteractiveTransition];
  ConanCell *conan = [ConanCell new];
  conan.scrollView.userInteractionEnabled = NO;
  NSLog(@"Back");
  } ...
  }