  We present the first kinematic analysis of the far outer halo globular
cluster (GC) population in the Local Group galaxy M31. Our sample contains 53
objects with projected radii of ~20-130 kpc, of which 44 have no previous
spectroscopic information. GCs with projected radii >30 kpc are found to
exhibit net rotation around the minor axis of M31, in the same sense as the
inner GCs, albeit with a smaller amplitude of 79 +/-19 km/s. The
rotation-corrected velocity dispersion of the full halo GC sample is 106 +/-12
km/s, which we observe to decrease with increasing projected radius. We find
compelling evidence for kinematic-coherence amongst GCs which project on top of
halo substructure, including a clear signature of infall for GCs lying along
the North-West stream. Using the tracer mass estimator, we estimate the
dynamical mass of M31 within 200 kpc to be M_M31 = (1.2-1.5) +/- 0.2 x 10^12
M_sun. This value is highly dependent on the chosen model and assumptions
within.
