This work reports high resolution SMA polarimetric observations toward NGC 2024 FIR 5, a magnetized core previously found to harbour compact sources. Our 345 GHz data indicates the presence of an extended dust emission associated to the putative disk where the compact sources are embedded. The 3$\sigma$ polarized intensity shows depolarization toward the peak stokes I emission. This missing polarized flux implies that the alignment efficiency of the core dust grains is low within higher column densities in which grain properties are likely different. The derived magnetic field geometry exhibits pinched field lines which are typical in evolved supercritical clouds where the magnetic field no longer support the core collapse. As a consequence for disklike structures, the gravitational pulling along the disk's long
axis makes an equatorial bend to the field lines that, in turn, results in a hourglass shape. The SMA field structure agrees perfectly with previous BIMA map that exhibit an asymmetric hourglass field. However, models are still necessary to provide a complete description of the evolutionary scenario of FIR 5.