The Dumb Serftontein Lineout

Other than the move actually creating a try, I just can't see how this makes sense. Surely it is better to have a specialist and "tall" jumper in the air. 
Additionally, Matfield is no longer available to cover the inside centre position on attack. 
Also, who is covering defence if the opposition turn the lineout over
With all the confusion that was going on the lineout during the match, is it really a good idea to get the backline players to make the jumps
Joining a maul is different when the actual extra weight can help. 

I also don't really see the point of a center in the line-out. In this case it worked, but it would have worked regardless of who had caught the ball. An argument can be made for the Lions tactic in Super Rugby where they used Faf De Klerk, because the scrummy is near the line out under normal circumstances, and would therefore not be out of place/noticed by the opposition. A center being there simply means a forward was not there, therefore no element of surprise because the line out numbers remain the same. 

 
Just some more Coetzee absurdity.

 The canes used Barret in a lineout recently...also resulted in a try.

 I do not think it is dumb - it is just a unexpected strategy with a real chance of working out.

If the backs are inside the lineout, it is obvious that the backline is not going to be used. This allows the opposition to align their own backline closer to the forwards- instead of covering out wide. 
The move was tried again later in the game- but in the 2nd instance, it was not thrown to Serfontein. Although, that might have been an overthrow if so it was a terrible throw. 
So what exactly is the point of having a backline play3er in the lineout? 
If the ball is won, the option to put the ball down the backline on attack is pretty much non-existent without an inside centre. 
As it was, the lineout was a total shambles on the day, so make things even more confusing by using a backline player. 

Imagine being in the backline, and having Matfield and Schalk blocking the players outside you. 
Practice the whole week at training on set moves with fellow backline team members, then have them all ruined by Schalk and Matfield

It's a new trick to keep the opposition guessing... variation of sorts. The second time they used it was a decoy.

I dunno SB. Seemed rather creative, certainly effective.
Quick clean ball to an unmarked jumper.