Dropped something?
The man moves through the room with the leather sofas and rug. Could he be looking for his cards or change? Something that fell out of his pockets? This would explain why the man is crawling through the room on his hands and knees. Who knows, he might be locked up because he lost his keys!
But no, this also turns out not to be the reason. The man crawls straight to the door, without looking around for a moment. Despite his clumsy movement method, the man seems to be in a great hurry. So, he hasn’t lost anything. What then would be the reason for the man crawling through space?
Perhaps it is…