  Let $\langle I_{1}, I_{2}, I_{3}\rangle$ be the complex hyperbolic
$(4,4,\infty)$ triangle group. In this paper we give a proof of a conjecture of
Schwartz for $\langle I_{1}, I_{2}, I_{3}\rangle$. That is $\langle I_{1},
I_{2}, I_{3}\rangle$ is discrete and faithful if and only if $I_1I_3I_2I_3$ is
nonelliptic. When $I_1I_3I_2I_3$ is parabolic, we show that the even subgroup
$\langle I_2 I_3, I_2I_1 \rangle$ is the holonomy representation of a
uniformizable spherical CR structure on the two-cusped hyperbolic 3-manifold
$s782$ in SnapPy notation.
