  We study local quenches in 1+1 dimensional conformal field theories at
large-c by operators carrying higher spin charge. Viewing such states as
solutions in Chern-Simons theory, representing infalling massive particles with
spin-three charge in the BTZ background, we use the Wilson line prescription to
compute the single-interval entanglement entropy (EE) and scrambling time
following the quench. We find that the change in EE is finite (and real) only
if the spin-three charge q is bounded by the energy of the perturbation E, as
|q|/c < E^2/c^2. We show that the Wilson line/EE correlator deep in the
quenched regime and its expansion for small quench widths overlaps with the
Regge limit for chaos of the out-of-time-ordered correlator. We further find
that the scrambling time for the two-sided mutual information between two
intervals in the thermofield double state increases with increasing spin-three
charge, diverging when the bound is saturated. For larger values of the charge,
the scrambling time is shorter than for pure gravity and controlled by the
spin-three Lyapunov exponent 4\pi/\beta. In a CFT with higher spin chemical
potential, dual to a higher spin black hole, we find that the chemical
potential must be bounded to ensure that the mutual information is a concave
function of time and entanglement speed is less than the speed of light. In
this case, a quench with zero higher spin charge yields the same Lyapunov
exponent as pure Einstein gravity.
