What do you do in the real world?

Last night I flew from SJC to VNY. To my astonishment I was cleared
vectors to SNS, then direct VNY (despite having filed a more standard
routing) at 9000 feet. I knew perfectly well that the routing was going
to change because I've done that route a zillion times, and indeed, near
Bakersfield they switched me over to the standard LHS, LYNXX8 arrival,
followed by vectors to the ILS RWY 16R.

My question is: what should I have done if I'd been in IMC and lost comm
before they changed my routing? By the book I should have continued to
fly my clearance, which would have run me into a mountain around GMN, so
that's probably not the right answer. Viable possibilities seem to
include:

1. Divert (or climb) just enough to avoid the terrain around GMN, fly
to VNY, and commence an approach from there.

2. As above, but vector myself for the ILS before reaching VNY.

3&4 - as above but fly to LHS and the LYNXX8 arrival.

5. Divert to the nearest airport with an IAP.

My aircraft is /G so I know pretty much exactly where I am at all times.

rg

References:

LYNXX8 arrival:
http://www.airnav.com/depart?http://.../00067LYNXX.PD
F

ILS RWY 16R approach:
http://www.airnav.com/depart?http://.../00552I16R.PDF