With respect to the page and hibernation files, how are you looking at them? The imaging engine treats them specially, so they are "in" the image in name, but name only, and by default no data from these files is actually included in the image. Instead, when you restore an image the files will be recreated as they were in the source system - but blank.
As for spanning, there are several situations where it's required and so it will be happening automatically - when cloning in DOS over a mapped network drive, for instance, the implementations of the SMB protocol provided by Microsoft or IBM do not allow working with large files and so they will span automatically instead.
To really try and force this off, use the command-line switch "
-split=0" - the -split switch lets you specify a custom size in MB when to split the image, and 0 is a special case that means "never".