I'm fairly new here as well, but there are two pieces of advice that have made sense to me:

1. rinsing under the faucet works fine - if you can trust yourself with this blade against your neck, you should be able to avoid the sink and faucet, just be careful.

2. use cold water - the logic behind this is that the cold water keeps the blade stiff. This seems to make sense, and is what I've been doing. I can't think of a way to verify that cold water is better than hot, but it makes logical sense to me, and it doesn't interfere with the nice warm lather, so I'll keep doing it.