Yea, actually it is both's fault, but anyway, it ain't that serious, it should have been free or removed from the Wire. Just my taught tough, no hard feelings.
Free? If it's someone else's trick it should not be given away. It should be removed from publication entirely.
People re-invent tricks all the time. Particularly these days when anyone can publish anything on their own without the filter of a publishing company. The 'creator' needs to do the research to find out if a trick has been put out already. Part of that research should include showing the trick to a variety of knowledgeable people and asking, "Have you seen this?" Clearly this trick was not shown to enough knowledgeable people. Oops, know better next time, not a huge deal.
I see two real problems exampled by this event. First, the Wire team should have caught this. Seriously. It's a trick they sell, they should probably have pointed that out. Even if the methods are different enough to warrant a separate release, they should have pointed out that the tricks are visually identical and therefore should have a note added on there. I thought this sort of thing would start happening when T11 announced the Wire. There's bound to be too many submissions for a small team like T11 to keep up with proper filtering. Coupled with T11's promise of 72 hours, I'm sure this sort of thing will continue to happen which will only further lower the reputation of things released on the Wire.
The second is magic cultures obsession with publishing. This could well be just my own bias, but it seems like magicians these days no longer look to be famous via great performances, but instead aim to be famous amongst magicians for publishing effects. This encourages people to just pump out tricks without really fully researching.
Understand, I'm not slamming on moooozzz. This is my commentary on this sort of thing in general.