php include question

I am trying to balance the load from my main server to a few other servers. To do this, I am moving a high traffic script to another server. However, I want this change to be unknown to both visitors and spiders. This is a solution I have worked out:

Server A (main server)
Server B (script execution / stores and executes php scripts)

So, server A gets a visitor. It uses a php include to execute a script on server B. Server B does the work of actually querying the database, parsing the data, and serving the page to server A. Server A includes the file generated by server B, and displays it for the user.

Here is my question:

Under high loads of visitors and spiders, will this solution help relieve the load on the main server?