This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I haven't tried this type of communication between action classes. If this were my application, I'd extract the logic from Action B and turn it into a web service. I'd then access the web service from Action A.