The diffusivity profile for the adsorption and desorption process reveals more about the nature of the reaction coordinate than actual dynamics. Diffusivity along the contact number reaction coordinate is lowest at low coordination number, where relatively large changes in conformation would only minimally change the contact number because of how far it is from the membrane surface. Typical acyl tail dynamics are quite able to change the contact number when the sorgoleone has substantial contacts with the membrane interior, increasing diffusion in these regions.