Vectored past the localizer

I can recall someone on this group once suggesting that if
you're past the localizer and concerned that you may be getting
close to terrain, and the frequency is too busy to get a word
in, that hitting IDENT is likely to cause ATC to notice.

This seems like a bit of an aggressive solution, but I'd guess the
controllers would prefer it to someone breaking off from their
assigned heading or altitude because of worries about terrain
avoidance. Could any of the controllers comment on this?

--
David Rind