I understand your point but I think it had merit, or at least, a reason. Look at it this way. The game was well beyond reach, and even when we had our "best" available combination in the middle (McDonald, McLean, Jones) we were still getting sodomised by Black, Lappin et al. We've got a bloke in the side who isn't getting near it in the forward line who's going to rot unless he gets in to the play somehow. We know he's familiar with the wings at Sandy. How about we take a punt and see if maybe he can produce something in a 5 minute pinch hit in the middle? Odds are he won't, but maybe he might. We lose nothing by trying.
What if it had been Neitz touchless in a half of footy? Would it be such a bad idea to chuck him in the middle for 5 minutes to try and getting him involved, throwing his weight around etc? Remember, Neitz will never be a midfielder either.
Btw I don't think Juice looked lost in the middle at all. He might prove to be a KPF who is capable of pinch hits in the middle of the ground. If that turns out to be the case, we've struck gold in a big way.
I don't think Robbo's height is the issue. The issue is he still jumps even when he's leading out, and if he doesn't take the grab he goes arse over turkey on the landing. If he could keep his feet he could easily bring the ball to ground for the crumbers.