Change the delegate of MGTwitterEngine

Question

Hi

I have setup and successfully logged in via xAuth using an extended class of MGTwitterEngine, my question is if I want to pass this to another view controller, how can I change the delegate class, as it is some sort of weak reference

@interface MGTwitterEngine : NSObject <MGTwitterParserDelegate> {
__weak NSObject <MGTwitterEngineDelegate> *_delegate;

Am I best wrap this up into a singleton class and pass around that way, seems overkill to login in each time, or have I missed a painstakingly obvious way of sharing this object around

At the moment I have added a setDelegate method to the MGTwitterEngine but feel as though I am fighting the framework unnecessarily