From what I remember, there's no such concept as 'consummation' of a marriage in WT policy. It is the signing of papers by the 2 spouses in front of 2 witnesses that officially starts a marriage. *That* is the actual 'consummation'. So, whether they have sex after that or not, is irrelevant.
Suppose a spouse has an accident when they drive out of the wedding party and gets incapable of having sexual relations from that point on, before having their first night. What then, is the marriage not legitimate because they didn't sexually consummate it? Can the other spouse cancel the marriage, or have another wife? Obviously not. Technically, this is not really different from the experience you shared (it is ethically different). And as we know, when elders look up a case, their only anxiety is to be *technically* correct, i.e. in order with the various regulations. Hence, the disfellowshipping of the poor guy.