I'd hold as long as an interim val is done, it 'indirectly' effects the other participants depending on if this requires an asset reallocation. they don't have 44% less. they never had that portion of the pooled assets.
but if there has been a significant drop in value due to stock market you have to do an interim val.
a better extreme example that what was given, let's say the person had a balance of 900,000 and assets were 1,000,000 at 1/1.
today the assets are worth only 850,000. does the company have to kick in another 50,000 so the person can be paid because he terminated? no you would interim val and prorate the assets.
but after all is said and done the other participants still have the same % as they did before(when you take into consideration you are excluding the person distributed.