[BradAMiller]

As Joe pointed out, the reset() method only zeros the accumulator as you can see in this code from the Gyro class:

    public void reset() {
        if (m_analog != null) {
            m_analog.resetAccumulator();
        }
    }

I'm not sure why it isn't resetting immediately unless, as was suggested, there is some delay in the hardware. I'd also suggest to try adding a delay after doing the reset to see if it makes a difference.

Let us know if that helps.