It sure is.
I went back last week. We abandoned our attempt after getting warnings from climbers ahead of us who had turned around. The first team complained of too-slow progress plugging through knee-deep soft, wet snow. The second team coming back had a near miss. One of them had slipped and his attempted self-arrest had resulted in him taking a fair slice of the surface layer down the hill with him. Luckily the whole thing stopped of its own accord before he went over the edge. (No doubt you remember the 100 metre cliff below the Birley!). That bloke was pretty badly shaken, I can tell you.
Anyway, putting the two reports together we concluded that there must be a deep unbonded layer sitting on top of the Birley and we decided against attempting to cross.
Back at Kea basin we saw a couple of avalanches coming off the East Face glacier - not the falling seracs from the toe that you would normally expect, but the surface layers sliding off, which convinced us we'd made the right decision. Later on, while walking out we saw avalanches on the Birley too.
Oh well, maybe third time lucky.............
We are the ones we've been waiting for