.$$ If $(u,p)$ solves in ${\widehat{\mathbf A}}_R$, then for $0<q<\infty$ [$$\begin{split} \label{ST-eq0} {\| {{\nabla}}u \|}_{L^q(A_{R})} + {\sigma}{\| p - (p)_{A_{R}} \|}_{L^q(A_{R})} \le \frac C{{\sigma}R}\,{\| u \|}_{L^{q}({\widehat{\mathbf A}}_R)} + C {\| F \|}_{L^q({\widehat{\mathbf A}}_R)},  \end{split}$$]{} where $C=C(q)$ is uniform in $R>0$ and ${\sigma}\in (0,\frac 00]$.  Note that the ${\sigma}$ factor appears in both sides of .  We may assume $R=0$ by scaling. 