I think the chances of LS returning to the MAN-AMS run (along with the other cities axed in its latest cull) are slim to none I'm afraid. I've a feeling the "next phase" growth for LS will very much concentrate on LBA and maybe other bases.
Can't help but feel its been a disappointing relationship for both MAPLC and LS as you would have thought they could have really made MAN their own when they burst on the scene here. Seems to have been some strange route decisions (did we need another carrier on Prague?!) and missed opportunities (no attempt at Madrid when that became vacant also could they have made a go of Bergen and Riga when they became vacant???)
If, and I know its only an if at the minute, U2 come to MAN I really wouldn't be surprised to see LS pack their bags from MAN completely.