Thanks for the comments all. This plant is certainly flirting with winter dormancy and it really needs a hotter environment, which I need to get off of the drawing board and into reality. I'm unsure what a second trigger, besides temperature, that would induce blooming would be. The photo periods are an even 12 hours, shortened 5 months ago and humidity and soil moisture have been unchanged for months. To add to the oddness this plant has tried to produce a normal inflorescence in the past but I clipped it off.