ADFS Error for Encryption Certificate

We had a certificate expire on exchange (that wasn't being used, or at least not expected to be used for any service) and then ADFS failed with the following ASP error:  (All looking for an Encryption Cert that isn't supposed to be used for ADFS-Exchange)

-Server 2012R2 - Exch 2013 SP1 CU 11 - .NET 4.5.2 

Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 4/14/2016 10:51:23 PM 
Event time (UTC): 4/15/2016 2:51:23 AM 
Event ID: 57ef257cf1d34dc888aedbb7c20d825b 
Event sequence: 2 
Event occurrence: 1 
Event detail code: 0 
 
Application information: 
    Application domain: /LM/W3SVC/1/ROOT/ecp-4-131051622750411375 
    Trust level: Full 
    Application Virtual Path: /ecp 
    Application Path: C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\ecp\ 
    Machine name: EXCH2013CAS 
 
Process information: 
    Process ID: 5208 
    Process name: w3wp.exe 
    Account name: NT AUTHORITY\SYSTEM 
 
Exception information: 
    Exception type: AdfsConfigurationException 
    Exception message: Encryption certificate is absent
   at Microsoft.Exchange.Security.Authentication.AdfsSessionSecurityTokenHandler.CreateTransforms()
   at Microsoft.Exchange.Security.Authentication.AdfsFederationAuthModule.FederatedAuthentication_ServiceConfigurationCreated(Object sender, ServiceConfigurationCreatedEventArgs e)
   at Microsoft.IdentityModel.Web.FederatedAuthentication.get_ServiceConfiguration()
   at Microsoft.IdentityModel.Web.HttpModuleBase.Init(HttpApplication context)
   at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers)
   at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context)
   at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context)
   at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)

 
 
Request information: 
    Request URL: https://localhost:443/ecp/ 
    Request path: /ecp/ 
    User host address: ::1 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: NT AUTHORITY\SYSTEM 
 
Thread information: 
    Thread ID: 26 
    Thread account name: NT AUTHORITY\SYSTEM 
    Is impersonating: False 
    Stack trace:    at Microsoft.Exchange.Security.Authentication.AdfsSessionSecurityTokenHandler.CreateTransforms()
   at Microsoft.Exchange.Security.Authentication.AdfsFederationAuthModule.FederatedAuthentication_ServiceConfigurationCreated(Object sender, ServiceConfigurationCreatedEventArgs e)
   at Microsoft.IdentityModel.Web.FederatedAuthentication.get_ServiceConfiguration()
   at Microsoft.IdentityModel.Web.HttpModuleBase.Init(HttpApplication context)
   at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers)
   at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context)
   at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context)
   at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)
 
 
Custom event details: