i donīt interpret it that way and i am a expert in contracts too.
(why, that is another stoy)
The thing is, that some people interpret it that way. you could see me
fight with a guy how interprets it that way and we would not get
anywhere, i assure you that.
the only one that is completely a strict violation from the blogger
contract is not having a i power blogger button(in active form, meaning
you can click it) somewhere in your template.
so donīt worry about it, the blogger guys actually know about nav bars
that come and go away.. that is caused because of the blogger servers.
you see there is a system that has the only action of inserting you
that blogger navbar..if that tha system is not working right this will
cause fluctuations on te blogger blogosphere in the terms of nav bars.
so, donīt worry about it. just donīt forget the blogger button,
donīt spam and donīt cheat in adsense, and your blogger blog will be
safe.