no, not really, it is just a number. If wanted a recap of all site totals in group 1 or the report footer, the only suggestion I can think of off the top of my head would be to create a formatted string that you could parse when you wanted to see it. You would use shared variables.
The other thought is to create a shared array variable and populate it for each site and then recall this at the end of the report, but I have never done this and it might not work.
Or you could write a subreport that would mimic the whole group 2, but only report on the group footer (would probably not be good for performance as the report is effect being generated twice, and displayed only once.
Moving totals from where they are calculated to another group is not at all a trivial task, at least not if you want a description and the associated value... that is what the group footer is for.