We prove that the restriction map from the subspace of regular points of
the holonomy perturbed SU(2) traceless flat moduli space of a tangle in a
3-manifold to the traceless flat moduli space of its boundary marked surface is a
Lagrangian immersion. A key ingredient in our proof is the use of composition
in the Weinstein category, combined with the fact that SU(2) holonomy
perturbations in a cylinder induce Hamiltonian isotopies. In addition, we show that
, the
2-sphere with four marked points, is its own traceless flat SU(2) moduli space.