  Using RG we investigate the non-equilibrium relaxation of the (Cardy-Ostlund)
2D random Sine-Gordon model, which describes pinned arrays of lines. Its
statics exhibits a marginal ($\theta=0$) glass phase for $T<T_g$ described by a
line of fixed points. We obtain the universal scaling functions for two-time
dynamical response and correlations near $T_g$ for various initial conditions,
as well as the autocorrelation exponent. The fluctuation dissipation ratio is
found to be non-trivial and continuously dependent on $T$.
