There is no jubilation here. However, things really don't make sense here.
The statement is embarassing, no doubt, however, launching a missile "by mistake", i simply don't buy it. What did we gain, what's the larger picture here, if there was any objective behind this, we will never know (most likely). However, I don't see any reason to credit the Pakistani establishment for their "mature & restrained" behaviour. If they have done so, there has to be a reason behind this.
As for coincidences -
1) Plane crash in the exact same location.
2) Missile allowed to fly for 5 - 6 mins, allowed to enter Pak after a "misfire"?
3) There was a NOTAM in place from Pak side in the same area if I am not mistaken.
4) Pak AD tracked it and did nothing about it.
How do we explain all these?