Well, it consists of three “experiments”:
- Some hosts have been dropped on a table.
- A host has been put down on a glove.
- A host has been put down on a hand.
Now, let’s look at the video instructing how to receive Communion in hand by Archdiocese of Kaunas (done since in Lithuania until now Communion in hand was practically unheard off). Well, first two experiments seem to be irrelevant, since nothing like that happens in this instructional video.
So, how reliable is the third “experiment”? Well, what were the experimental conditions? For example, were the hosts “reused” between experiments (breaking is far more likely if they were)? Were there any more tries (it is far less impressive, if he is showing the only case of host breaking out of ten)?
Therefore, the video is not really “the proof”. By itself, it only shows us that the host can break under certain circumstances, and we knew that already.
So, nothing changes: sure, one should check for any visible fragments and deal with them accordingly, should he find any. There is nothing else one can do, so afterwards one should simply trust God, Church, the priest, other faithful. Failure to trust won’t make things any better.