I'm 99.99% sure he will not bite. The fact there has not been a recorded bite with this relatively common species, the fact he didn't bite my hand when it smelled like shrimp and he crawled over it to get to the shrimp and now this :
Originally I was planning on feeding him tonight since he now does come out during the day with coaxing but I was vacuuming and he came out to see what all the commotion was so I got out the camera and took some videos. I also noticed I still have a ton of crabs in my fiddler tank, which I rarely if ever feed.
First I got this video of him swimming around.
http://www.youtube.com/watch?v=gixiowERJOA&hd=1
Then I decided to see what would happen if I put my hand in without food. After a few seconds he came over to explore pulled me a bit let me touch him as well and did not show any signs of aggression. I was pretty sure he was hungry as it had been a day and a half since he ate.
http://www.youtube.com/watch?v=1WOH-WXSlRA&hd=1
After the video I went and grabbed one of my crabs, put him in a jar and put him in. I didn't think it would go by this fast but the 42 second video came out great!
http://www.youtube.com/watch?v=qBrxhKTg9XY&hd=1
I will lookout for a jar with a lid this weekend. I'll also try to wait until sunday night to feed him again, Since the crab was a lot smaller then his usual meal of large shrimp he may even come out tonight for a feeding.