By analyzing the patterns of bending extinction contours present on the electron microscopic images of nanotubic (~80 nm) Spatial dissipative structures, the formation of dangling, low-angle, interblock boundaries in nanotin spatial dissipative structures of hexagonal selenium with elastically rotating rotational curvature around [001] is studied. The effect of a change in the sign of the misorientation vector along the torn-off, small-angle, interblock torsion boundaries was discovered. Taking into account the change along the interblock boundary and the modulus and the sign of the misorientation vector, a model for the formation of dangling, low-angle, interblock torsion boundaries in the nano-current spatial dissipative structures of hexagonal selenium, whose lattice undergoes elastic rotational curvature, is developed. A formula is derived for calculating the energy of dangling, small-angle, interblock torsion boundaries formed in nano-current spatial dissipative structures, along which both the modulus and the sign of the misorientation vector change.