does viz.go() have an antidote?

[vr_boyko]

I am looking for a command: maybe viz.stop()
that simply kills all timers, and "freezes" keyboard/mouse inputs but does not kill the head tracking...
right now, I am using an infinite loop, which is by far the least elegant of ways... but it stops the user once thir time is up.

Also, is there a way to put a "console" message (something like "Thank you for your participation") in the user's view after their time is up (and the above STOP command has been issued)

Thanks!