The risk of a strong wind (Chinook or foehn winds are common here in New Zealand. Highest recorded wind speed 250km/h caused by one) should never be underestimated. It takes a lot of physical and mental energy to move safely in these conditions - even the most benign snow slope can become treacherous with enough wind. If on the walk out 'get-home-itus' can make you push harder than you might otherwise. The focus must be on the amount of effort you are putting in, not how much (little) you think you should be.
I have seen a climber picked up and blown 20 meters by a foehn wind. It does not matter how good a climber you are - if you lifted off the ground the outcome is always going to be down to luck. If the wind is lifting you, you need to consider if you are safe. If not you can then rope up and use a running belay, maybe even a full belay. Worst case is to dig in and wait it out, but make you this decision is made early enough for a successful shelter to be built or found.
As far as carrying on, roped or unroped, you need to reduce your wind profile. If you are lucky you can choose a route that allows you to descend with you back to the wind - it will be fast, easy and with the wind no longer in your eyes, you can see where your going so much safer (I have done this and ended up on the opposite side of the mountain from my car and overnight gear, but alive). If you have to climb down into the wind, face into it (Unless no pack, then side on is a lower profile). Squat down rather than lean back or forward. Listen for wind gusts and when you hear one coming, get low quickly, as the gust dies down, move on. Have your ice axe ready at all times and use it for stability. I have ended up crawling for about 100 meters,(which got me to a lee slope).
Look for terrain that provide shelter from the wind, but be very wary of lee slopes and assess avalanche risk (all too easy to forget in the joy and relief of getting out the wind).