The 777 was built to cope with redundancies that did not require extensive crew input. The QRH consists of a lot of condition statements rather than a lot of procedural steps. The number of 777 hull losses where no one was killed is impressive for a WB and is a testament to its engineering. So to suggest that an exploding oxy bottle is going to take out the crew and multiple systems just does not get past any rational scrutiny. If the crew, particularly an experienced PIC wanted to get that aircraft on the ground following an internal failure they would have done so. Any suggestion otherwise demonstrates a complete misunderstanding of the mind set and competency of a well trained professional flight crew.