Ribbon Interaction

This comp is based on the developer GLSL VertexNoise.qtz example, which I found here: http://vdmx.memo.tv/goto10/3d_ribbon_0

goto10 simply replaced the teapot with a GLSL Grid patch. I think the effect is very nice. I'd like to interact with the ribbon -- I'd like to select one end of the ribbon and drag it around and have it behave like fabric suspended in air. Could this be done in GLSL? If so, how?

I know the MouseRibbon.qtz approaches this concept, but I love this GLSL noise version so I thought I would ask.