Hi Andrew -
I can give you an unqualified "maybe!" as an answer.
From the information I found here
...it appears that Remedy stores it's data in either DB2, Informix, Oracle, or Sybase/SQL Server databases. Tableau can connect to all of these with the appropriate drivers.
So what you'll need to do is:
- Talk to your Remedy admins and find out what data store they're using
- Get credentials which will allow you to connect directly to the data store in question
- Install appropriate drivers from tableausoftware.com/drivers
- "Go Fishing". I suspect that the database design inside an Enterprise Application like this is going to be quite complex.