it would seem that the courts may find that the affordable unit provision is negated as the property was transferred involuntarily from the prior owner.  

in similar fashion, if a property is purchased at tax sale and it would have had right of first refusal (RFF) language; that languange is/could be negated due to the involuntary transfer and the RFF cannot be enforced.

i'd be interested in hearing how Commonwealth of MA resolves this.