Before revision:  Performing molecular dynamics simulations of the polymer in presence of a Langevin heat bath, and stochastic motor activity  we obtain desorption phase diagrams that show good agreement with theory. With increase in pulling force, the polymer undergoes a first order phase transition from mostly adsorbed to fully desorbed state via a regime of coexistence where the steady state dynamics of the polymer switches between large fraction of adsorbed and desorbed lengths .
After revision:  Performing molecular dynamics simulations of the polymer in presence of a Langevin heat bath, and stochastic motor activity we obtain desorption phase diagrams . The correlation time for fluctuations in desorbed fraction increases as one approaches complete desorption, captured quantitatively by a power law spectral density. We present theoretical analysis of the phase diagram using mean field approximations in the weakly bending limit of the polymer switches between large fraction of adsorbed and desorbed lengths .