Rotating cells in NetWalk rotates the whole grid

In my android application of NetWalk, I've got a grid to display and randomise images based on NetWalk.

However, everytime I touch one of the cells to rotate, the whole grid randomises again.

Any idea how I would go about fixing this?

That's the main bit of code to randomise the grid:

for (int col = 0; col < mGame.getColumns(); col++)
    {
        for(int row = 0; row < mGame.getRows(); row++)
        {
            int randomNumber = rand.nextInt(3);

            for (int turns = 1; turns < randomNumber; turns++)
            {
                mGame.rotateRight(col, row);
            }

This handles the touch input:

@Override
    public void onLongPress(MotionEvent ev)
    {
        float x = ev.getX();
        float y = ev.getY();

        int touchedColumn = (int) x / (int) sqWidth;
        int touchedRow = (int) y / (int) sqHeight;

        mGame.rotateRight(touchedColumn, touchedRow);

        invalidate();
    }