This would be possible, but from what you describe, it does not sound like a good idea. I would suggest instead making a Tab Bar app, and having a separate view controller for each of your 5 views.
If you do not want to make a tab bar app, you can certainly do what you describe, but I would recommend having a separate view controller instance for each view. You could have your 5 buttons in your main view, and each button could push a modal view with no animation. You could then add whatever transition animation you want. In your modal view, you could have a button that pops the modal view.
In your main view controller, you would do this:
- (IBAction)button1Click {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];
UIViewController *newController = [[UIViewController alloc] initWithNibName:@"View1" bundle:nil];
[self presentModalViewController:newController animated:NO];
[newController release];
[UIView commitAnimations];
}
And in your view 1 controller:
- (IBAction)backToMainClick {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES];
[self dismissModalViewControllerAnimated:NO];
[UIView commitAnimations];
}