Can't you just pass a query string back from the company page like
?backpage=companylist.aspx&tab=company
After save redirect back to the "backpage"
then when you load up your page that has all the tabs go
if request("tab") <> "" then
radtabs.Tabs.FindTabByText(
request("tab") ).Selected = True
end if
not pretty but I think that is what you are getting at yes?