Duncan is still alive and kicking, AFAIK. I received an email xmas card from him this weekend.
He and Spike Cover are buddies. Spike is the program director for the KHA program and, IMHO, one of the best amature authorities on KHV around. My koi club had him and Rob Hildreth, DVM up for a day-long seminar on Koi Health this summer. Spike's talk was on KHV and SVC... I still have the notes around here.
Bottom line is that you want to Q for both. To clean up from either the bleach treatment and total dry out is recommended. KHV is supposed to have a short life span without a host but we could be wrong about that.
The heat treatment will terminate the current infection, but we're not sure about carrier status. It could be that a heat treated fish is a carrier and it'll infect a pond even years after the initial infection and survival. That's the bugger with Herpes viruses; they can hide and we can't detect them well when they do. This is also one reason why the Israeli researchers want to prove it isn't a Herpes virus; then the 'cured' and 'immune' fish are safe. But I want other verification before counting on it. It'll be years before we can be relatively sure about the virus type, I think.
Regarding #1: probably birds can carry it, just like any other parasite. The likelihood is slim, but still there.