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We present new high fidelity optical coronagraphic imagery of the inner$\sim$50 au of AU Mic's edge-on debris disk using the BAR5 occulter of theHubble Space Telescope Imaging Spectrograph (HST/STIS) obtained on 26-27 July2018. This new imagery reveals that "feature A", residing at a projectedstellocentric separation of 14.2 au on SE-side of the disk, exhibits anapparent "loop-like" morphology at the time of our observations. The loop has aprojected width of 1.5 au and rises 2.3 au above the disk midplane. We alsoexplored TESS photometric observations of AU Mic that are consistent withevidence of two starspot complexes in the system. The likely co-alignment ofthe stellar and disk rotational axes breaks degeneracies in detailed spotmodeling, indicating that AU Mic's projected magnetic field axis is offset fromits rotational axis. We speculate that small grains in AU Mic's disk could besculpted by a time-dependent wind that is influenced by this offset magneticfield axis, analogous to co-rotating Solar interaction regions that sculpt andinfluence the inner and outer regions of our own Heliosphere. Alternatively, ifthe observed spot modulation is indicative of a significant mis-alignment ofthe stellar and disk rotational axes, we suggest the disk could still besculpted by the differential equatorial versus polar wind that it sees withevery stellar rotation.

High Fidelity Imaging of the Inner AU Mic Debris Disk: Evidence of Differential Wind Sculpting?