We　consider　the　2　+　1　dimensional　space-time　isotropic　anti-ferromagnetic　equation　(IAF　for　short)　to　the　2-sphere　for　equivariant　data　of　homotopy　number　N　＞=　1.　Using　the　method　of　matched　asymptotic　expansions,　we　present　an　analysis　of　the　asymptotic　behavior　of　singularities　arising　in　this　special　class　of　solutions.　Specifically,　a　sharp　description　of　the　corresponding　blowup　rate　and　the　stability　are　investigated　in　settings　with　certain　symmetries.　We　also　find　out　the　blowup　behavior　of　two　different　IAFs　are　very　different.　In　the　end,　the　blowup　results　are　verified　by　numerical　experiments.　(C)　2012　Elsevier　B.　V.　All　rights　reserved.