What I think Trouillot is trying to say is that the "bundle of silences" metaphor portrays history as not a full account, but an bundle of exclusions from different accounts done deliberately or not. And "deconstruct these silences will vary" Trouillot says not to look at these accounts 'all under the same roof' (the same) but to analyze each source, narrative, etc. that produced the exclusion in order.