So, it seems the 'EB off-ramp' is just a temporary alignment that will partially revert back to Ellett Road once the new 'permanent' EB off-ramp is opened.
They are now starting to demolish the old overpass for Columbia Ave, as the new one is now officially open.
The 'old' WB-off & EB-on ramps are still in-use for now.
But I think with the 'new' WB-on & 'temp' EB-off ramps being open already, I do think it is safe enough to recenter the interchange and put an '*Old91' point at the old location.
(And just so you know, YouTube just randomly suggested this video to me, which is really odd, lol.)