An adjustable drill string housing, comprising: an annular member having an upper end and a lower end, the annular member deformable about a bend axis between first and second operational configurations, wherein the annular member maintains an internal preload therein in the first operational configuration such that the upper and lower longitudinal axes (X2; X3) are disposed at a first bend angle (θ) with respect to one another, and wherein at least a portion of the internal preload is relieved in the second operational configuration such that the upper and lower longitudinal axes (X2; X3) are disposed at a second bend angle (θ) with respect to one another; at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) carried by the annular member, the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) coupled to the annular member to maintain at least a portion of the internal preload in the annular member such that failure of the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) induces the annular member to move to the second operational configuration; and an energy delivery system (502, 570) operable to deliver a fluid to the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) from a remote location on the adjustable drill string housing, the energy delivery system (502, 570) comprising: an energy reservoir for the fluid disposed at the remote location; a fluid conduit extending between the energy reservoir and the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380); and an initiator selectively operable to promote fluid flow through the fluid conduit. an annular member having an upper end and a lower end, the annular member deformable about a bend axis between first and second operational configurations, wherein the annular member maintains an internal preload therein in the first operational configuration such that the upper and lower longitudinal axes (X2; X3) are disposed at a first bend angle (θ) with respect to one another, and wherein at least a portion of the internal preload is relieved in the second operational configuration such that the upper and lower longitudinal axes (X2; X3) are disposed at a second bend angle (θ) with respect to one another; at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) carried by the annular member, the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) coupled to the annular member to maintain at least a portion of the internal preload in the annular member such that failure of the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) induces the annular member to move to the second operational configuration; and an energy delivery system (502, 570) operable to deliver a fluid to the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380) from a remote location on the adjustable drill string housing, the energy delivery system (502, 570) comprising: an energy reservoir for the fluid disposed at the remote location; a fluid conduit extending between the energy reservoir and the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380); and an initiator selectively operable to promote fluid flow through the fluid conduit. an energy reservoir for the fluid disposed at the remote location; a fluid conduit extending between the energy reservoir and the at least one support member (120, 120a, 120b, 120e, 120e', 120f, 120f, 302, 320, 332, 344, 362, 366, 380); and an initiator selectively operable to promote fluid flow through the fluid conduit.