It appears to me that the transition effects are built into the phoneui (phoneui.js) and therefore M1 is limited to the ones listed below “out-of-the-box”. I would think you would need to add your turn code to this file in order to programmatically call the transition from within M1.
phoneui.transitions = {
none : 'NONE',
fade : 'FADE',
flipRight : 'FLIP_RIGHT',
flipLeft : 'FLIP_LEFT',
slideRight : 'SLIDE_RIGHT',
slideLeft : 'SLIDE_LEFT',
slideUp : 'SLIDE_UP',
slideDown : 'SLIDE_DOWN'
};
Here is how you can programmatically change pages through code using a multipage widget.
phoneui.gotoMultiPagePage('m1-<your-file-name>-multiPage', 'SET_PAGE', 'm1-<your-file-name>-page1', 'FADE');
Not sure if this is helpful or not…