Eh, this is the first time this goal as been accomplished at the NHL level. I'm fine with it.
It's when it becomes common place is when we should start reevaluating whether or not it should be allowed.
Just put it in the same category as the Spin-o-Rama goals in the shootout. Gimmicky as all hell and pretty unfair to the goalie, but overall not a big enough to deal to make a stink of it.