What we focused on this week was the resurrection body of Jesus. It is a pretty speculative question since there is really very little about it that is said. One thing that really boggled my mind though was how eager people were to see Jesus' body as being able to walk through walls. Not that I want to say that it is impossible, but really the evidence isn't there to support the notion.
If you look at John's Gospel, chapter 20, you read the following:
19 In the evening of that first day of the week, the disciples were [gathered together] with the doors locked because of their fear of the Jews. Then Jesus came, stood among them, and said to them,
"Peace to you!"26 After eight days His disciples were indoors again, and Thomas was with them. Even though the doors were locked, Jesus came and stood among them. He said, "Peace to you!"
The problem though is that the question is not really rhetorical; there are answers other than "there is no other way." In Acts you see how people escape from cells in a similar fashion, and we don't assume they were immaterial (Acts 5:19,23; 12:6-10). Further we do see how people's perceptions are manipulated so as t be unable to see things that in fact are right before them (Lk. 24:16).
In other words, the Bible provides us with precedent for other explanations. Precedents, to me , should be accepted as explanations ahead of the idea of walking through walls.