I finally was successful in getting the steering shaft telescoped enough into the column that the coupler (still attached to the steering rod) is separated from the male part of the gear box (splines?). But I can't get the coupler off still as I can't move it up / down / to either side enough for it to get clear of that part coming out of the gear box. Is there something I missed? I followed someone's instructions here (mostly, except I took both Allen bolts off at once, oops) and pried it toward the column till it was separated. Of course now I've messed with it so much that it's not gonna line up right, but I don't think I got to the point where I could mark it. sigh...my mechanical skill is only enough to get me in trouble.
So now I'm stuck under a tree in the side yard until I can get this thing done...at least it'll make me stick to it!