Harry's Wand Conjures the Dark Mark - Significance?

[Steve Binch]

No: HPFGUIDX 50984

I was just re-listening to GoF and was wondering what significance there is
in Barty Jr. using Harry's wand to conjure the dark mark. JKR could have had
Jr. use any wand, but she made it Harry's wand. Has there been any relavence
to this later in the book? I wonder if the fact that Harry's wand has
conjured the dark mark will have any significance later on. I know it's kind
of a stab in the dark, but what do you guys think?