I just posted about this in the high avalanche danger thread.
I wouldn't say don't even think about it, but you need to make the correct choices, clearly this group did not.
I do not know if they dug a pit or not. The avalanche warning clearly stated that an avalanche would probably be triggered by a skier on slope facing this direction, elevation, and angle. That should have been in the back of their mind. Lower angle, forested terrain is the way to go, stuff that does not travel on egress avalanche paths. So you are not likely to trigger a slide from below that takes you out.
They also choose to ski a slope that if an avalanche did happen (which it did) you could be carried into dangerous obstacles. In this instance an Aspen grove. From the report it sounds like being strained through the grove likely killed him.
They did do the right thing by skiing one at a time. At least only one person was exposed to the danger. This is a year to dial it back until there is some good bonding of the snow. Everyone may have to wait until spring once the snow goes isothermic to get those conditions. I am waiting for the same thing around here. Sucks you can't get on the most exciting terrain, but it's better to live to ride another day. Dig pits, do stability tests, observe avalanche cycles, watch the weather, read the reports everyday. The devil is in the details, and it's one devil of a season.
I am so sorry and bummed out this happened.