How do you hide Page tabs for Activity Guide ?

I have a Fluid Component with 4 pages on it.

I am displaying them vertically by inserting PS_SIDE_PAGETABS into the component, and on the Component Properties Internet tab, ticking the 'Display Folder Tabs (top)' box.

Now, I also want to use the same component within an Activity Guide. But as the activity guide will have its own left panel navigation I need to turn it off in my component.

I can detect if the Activity Guide is running with IsAGRequest()

Then I can turn the vertical navigation off by hiding the page. Page.PT_SIDE_PAGETABS.Visible = False;