Aaron Carter, the former bone of contention between Hilary Duff and Lindsay Lohan, missed his big brother Nick's wedding to longtime girlfriend Lauren Kitt this weekend. WTF?

Well, the younger, erstwhile Carter shared a photo on Instagram, looking like he was on a plane and inevitably delayed. He posted: "Really pissed off that I missed my brothers wedding today.. i hope he doesn't hate me .. I tried to get there... I'm sorry bro @nickcarter #technicalProblems."

Okay, can we break this whole thing down for a second?

First, maybe Aaron needs to pick up a phone and call his Backstreet Boys big bro himself to discuss his absence, instead of posting in a public forum like Instagram for all their fans to see. That seems to be the right thing to do.

And while Aaron, who claimed he was jumped by rapid NKOTB fans last year in a highly suspicious situation, blamed some sort of technical difficulties, we're not sure what those tech problems were. He didn't cite the exact reason.

Maybe he should have better managed his time and plans, arriving there a day in advance so as not to miss the nuptials. How do you not show up to your brother's big day?

It's a bit weird, we have to say. Maybe the Carter family is more dysfunctional than we had thought? Or is it just Aaron, 26, who marches to the beat of his own drum?

See the photo below that accompanied his reveal about why he wasn't there.