Thank you...  that apparently fixed one issue but then I ended up with an infinite loop where the page never actually loaded.  To fix that, I created a second VF Page without the Action tag and send the user to that new page.  So below is the final working code.   If anyone has a smarter way to accomplish this, I'd love to hear from you.

Redirect page that the Opportunity View button redirects to:

<apex:page standardController="Opportunity" 
		extensions="OpportunityRedirect" action="{!redirect}">
	<apex:outputfield value"{!Opportunity.OwnerId/>
</apex:page>

New view page for the Opportunity which still leverages all the page layout functionality:

<apex:page standardController="Opportunity">
	<apex:detail />
</apex:page>

Here is the controller to bring it all together:

public with sharing class OpportunityRedirect {
	String oppId;
        String ownerId;
        private final Opportunity Oppty;

	public OpportunityRedirect(ApexPages.StandardController stdController) {
		oppId = stdController.getId();
                Oppty = (Opportunity) stdController.getRecord();
                ownerId = oppty.OwnerId;
	}
        
	public PageReference redirect() {
		PageReference pageDetail = new PageReference ('/p/opp/ContactRoleEditUi/e?oppid=' + oppId + '&retURL=' + oppId);
		pageDetail.setRedirect(true);
		
		OpportunityContactRole[] ocr = [select ContactId, Role, isPrimary from OpportunityContactRole where OpportunityId = :oppId];
		if (ocr.size() == 0 && UserInfo.getUserId() == ownerId) return pageDetail;
		
		PageReference pageOpportunity = new PageReference('/apex/OpportunityView');
		pageOpportunity.getParameters().put('id',oppId);
		pageOpportunity.setRedirect(true);
		return pageOpportunity;
	}
}

(modified to add logic the redirect only the Opportunity Owner to the Contact Role page)