Maybe if Lama Osel returns to take up the role as his predecessor Lama Yeshe, and relieve Lama Zopa so that Lama Zopa can focus on "recovering"...then I wonder whether Lama Osel would introduce the practise of Dorje Shugden to the followers, students and practitioners of FPMT? Why is it now that Lama Osel is being more involved in FPMT? Why at this juncture, why this timing? Why wasn't Lama Osel much more involved when Lama Zopa first got sick? Could it be that the time is right for Dorje Shugden to surge throughout the world?
However, it is great that Lama Osel has maintained a role in Dharma Work and spreading the Dharma. His choice to return his vows wouldnot be so simple. Having the same mindstream as the great Lama Yeshe, maybe reaching out to today's society required Lama Osel to do what he did. And in time, when his base is strong, merge with FPMT, as what can be deduced by his actions of late.