strange hitchikers
 

Can anyone ID these little guys? at first I thought the one on the orange zoo was a glass anemone but after nuking a few with lemon juice, I know what they look like and they don't look like this.
The second one on the green polyps has me stumped... The feelers/fingers, whatever, look shrivelled up a bit and white...
Also I found a 1/2" hairy crab on my star polyps last night and put him in the sump since I heard they eat corals, I guess he hitched a ride and nobody saw him, should I take him out of the sump and get rid of him or just leave him there?