I'm heading down to Spring this evening actually. The forecast looks pretty good from what I've seen. The rock is much better than Vantage, it's Andesite like Tieton, but with less cracks. there are awesome trad lines there though. Best of all, there are tons less people. Some of the hard routes are drilled/chipped though. and some excessive bolting IMO. It's a lot like Vantage in that there are tons of routes really close together, allowing for a lot of routes per day. There's free camping about 1/2 mile from the climbing area. No parking permit required.
I hope to take some pictures that I can post. For weather, check Meacham, OR and Pendleton.