Jeff zone 8 N.C.

I can not tell by the pic but if the plant is actively growing and the leaf is healthy, shorter, and maybe thicker in texture, than the previous leaf, then it is probably blooming. Might as well cut that trunk down so the corm energy can go to the pups. You can remove all or some pups now. The ones left will allow them to draw energy from the blooming (main/mother) corm. The blooming corm should sprout new pups whether removing all pups or some.