Usually they retreat into the crevice that they hide their foot in when they split or dispell watse. To me it just looks like it is reaching for the light. They can stretch themselves very far. They also will deflate themselves and take in new water for their cell to reginerate, (kind of like taking a bath). This is very common. If it is not moving around alot, or not attaching then you could say that it is happy. When they split it is down the middle. Half going one way the other half usually stays in the origianl spot. Read about them splitting in the site I gave you earlier. Hope this helps

Rich