The spin Jahn-Teller effect stabilises 3D magnetic order in an otherwise frustrated system via magnetoelastic coupling, spontaneously at the magnetic phase transition. Examples are rare, and limited to crystals of high symmetry (e.g. spinel). We have shown that CoTi2O5, a low symmetry crystal, also exhibits spin Jahn-Teller antiferromagnetism. Here, low dimensional magnetism persists above the Neel temperature, allowing, in principle, for the 3D antiferromagnetic order to be switched on and off by applied strain – a novel material functionality of interest in the field of spintronics and oxide electronics. We propose a neutron scattering experiment to characterise the key low dimensional order, as well as determine the magnetic character of an isostructural material, FeTi2O5, which may prove to be a more promising candidate for inclusion in a spin Jahn-Teller device.