Once, he was present at a meeting of the Church, when the question was discussed whether priests should have permission to marry; and, as he sat with his head hung down, apparently thinking about it, a voice seemed to come out of a crucifix in the room, and warn the meeting to be of his opinion.

This was some juggling of Dunstan's, and was probably his own voice disguised.

But he played off a worse juggle than that, soon afterwards; for, another meeting being held on the same subject, and he and his supporters being seated on one side of a great room, and their opponents on the other, he rose and said, 'To Christ himself, as judge, do I commit this cause!' Immediately on these words being spoken, the floor where the opposite party sat gave way, and some were killed and many wounded.

You may be pretty sure that it had been weakened under Dunstan's direction, and that it fell at Dunstan's signal.
_His_ part of the floor did not go down.

No, no.