Indeed, you're on the right track with your thinking, Dave. If you want to release a specific subset of servo ports without affecting others (such as UART ports), you can indeed write a JavaScript snippet to selectively release only the servos you're interested in. This approach allows you to avoid the unintended side effects of using Servo.releaseAll() which, as you've discovered, can impact other functionalities tied to the digital pins.

Here's an example of how you might write such a script in JavaScript to release a specific set of servo ports:

// Define an array of servo ports you want to release
var servoPortsToRelease = [0, 1, 5, 7]; // Example ports

// Loop through the array and release each specified servo
servoPortsToRelease.forEach(function(port) {
    Servo.release(port, 2); // Assuming you're targeting EZ-B index #2
});

In this script, servoPortsToRelease is an array containing the ports of the servos you wish to release. The forEach loop iterates over this array, and for each port number in the array, it calls Servo.release(port, 2); to release that specific servo on EZ-B board #2.

This method gives you fine-grained control over which servos are released, allowing you to preserve the state of your UARTs or any other functionalities you don't want to be affected.

Remember, the second parameter in Servo.release(port, 2); specifies the EZ-B board index, so adjust it according to which board you're working with.