Here is an unofficial English translation made by the folks at GaiaGuys.net from a contact Meier had with his second contact person (Asket) on Feb. 3, 1953, transcribed by Meier in Mehrauli, India in 1964. Asket explains:
"87. This actually also soon happened according to the decree of this regulation, when a huge space ship still in the terrestrial area was not able to free itself anymore from earth, where it had lain hidden during several months, with severe technical damage, in the country which is called Russia. 88. The ship was able to lift itself up for only a few hundred meters and then dropped down more closely. 89. In accordance with the regulation that no spaceships, etc. were allowed to approach the earth more closely, any outside assistance was also impossible. 90. Other races from the universe stationed on the earth were, on the other hand, forbidden to bring the damaged ship assistance because among the crew a terrestrial epidemic had broken out, which was very dangerous for this form of life. 91. In the knowledge that no more assistance awaited them, they designed an enormous bomb from the cornerstones of life, which are called atoms, forced the ship as far as possible upward into the sky and let it then simply fall down. 92. Like an enormous comet, it fell towards the earth, and before it could strike the earth, at a few hundred meters height, the atomic bomb was ignited. 93. An enormous explosion tore the ship and the crew up, turned everything to dust and destroyed the landscape. 94. From everything only a giant crater remained, which is called erroneously by your scientists a meteor crater. 95. More than 4,300 life forms of extraterrestrial origin were destroyed during this gigantic destruction, which only leads back to the terrestrial Christian cult, because the actual reason for this destruction was the insanity of this terrestrial religion."
The reason Christianity was involved with the event is tied in with another part of the story, which explains the regulation that was mentioned above in sentence 87. This is what I found out about this, presumably in another untranslated (part of the) contact. [Paraphrased from a summary by David Chance]:
Less than 1,130 years ago, three space-traveling races came to Earth and secretly contacted Earth priests. They learned our religions at the time and subsequently considered that they were falsely led by their own philosophies on Creation that they had come to know. Hence, they adopted Christianity, took the teachings back to their homeworlds and distributed them. Within a relatively short time, they destroyed the peace they had known for thousands of years by generating conflicts and wars which spread to two other worlds. Other space-traveling races became aware of this and intervened and forbid Earth religions and destroyed all religious materials. Further visits to Earth were forbidden with the decree that if a ship became stranded on Earth, the ship and the crew must eliminate themselves. This regulation was exercised when the above-mentioned large spaceship was stranded in Russia and had to build an atomic device for the sole purpose of self-destruction.
This will probably elicit more questions, I'm sure, but I hope this helps to further clarify.