Really hard to see the linkage in that video but I'm sure you could re-work it to fit within the column restraints and still maintain 45 degrees of movement.
I saw that video as well and I was actually looking for a reversing rotisserie motor but had a difficult time finding one so I went with the linkage. Not sure if there is an advantage to either one...I think your motion looks great! I'm working on a leering skeleton right now. Do you see any advantages of the linkages versus just finding a rotisserie motor that just auto reverses? I saw someone on the forum had built one that took advantage of the auto reverse when it gets stuck. Just use whichever one you can acquire for the lowest cost?