Hi Tim,
I got a response to this problem from Kevin:
"If you want to use multiple instances of the same business object class, you can manually register user interface controls with a particular business object instance by calling the Web Form's RegisterBoundControl method, passing a reference to the control to be bound, then a reference to the business object to bind to. For example:
this.RegisterBoundControl(this.myGrid, this.oCustomer);"