Black loosing time in the Ziegler opening

The Blackmar Diemer defender has no time to loose in the opening. But sometimes, they do think they have all the time for fancy things - that's waht happened to my opponent today in a chess.com blitz game

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 c6 6.Bc4
The Ziegler, which can turn into the O'Kelly defense when combined with a subsequent Bf5.

6...Nd5 (diagram)
Black wants to get rid of that annoying c3 knight, but is there time ?

7.Ne5 !! e6 8.0-0 (diagram)

Dark clouds appear on the horizon - black is forced to retreat his jumper.

8...Nf6 9.Ne4  (diagram)

Being so much behing in development, taking the knight is no option for black, eg 9...Nxe4 10.Nxf7 Qc7 12.Nxh8 (++)

9...Be7 10.Ng5 (diagram)

Black has to defend f7 and can do so in two ways.

a/ 10...0-0 11.Qd3 h6 12.Nexf6 Rxf7 13.Nxe6 Bxe6 14.Bxe6 Qf8 15.Qg6 (+)

b/ 10...Rf8 11.Be3 (+=)

I was actually quite proud of that finding this in a blitz game.
A fair punishment for black loosing so much time in the opening !