Woma aggression

Three weeks ago I was given a adult unsexed Woma and it's 4 foot Boaphile.
The owner was moving and gave it to me. He said it stops eating for weeks or a month then starts again.

It's eaten all three times I've fed it (two small rats per feeding).

Last week my daughter was holding it and brought it in my room . It moved towards me and then bit me on my rib.
After about 25 seconds it loosened it's grip and i pull my shirt and it let go.

The following week I went to clean it's cage and it started rattling it's tail and threat striking.
My daughter held it and it was fine. I just went to feed it and same reaction.

Temps are good (highs and lows), in a quiet area with no traffic.
Is this to be expected from Woma's lol (contrary to what I've heard)?
Maybe doesn't like men? :P

Thanks in advance for any ideas.

I have a male Woma that's about 1400 grams, about four years old. When I got him he got pretty beat up in the mail and he was a terror, would strike at me through the glass aquarium, really super mean. Then I put him in an ARS 8018 tub and he mellowed out. Now he is a sweetheart and loves to be handled, HOWEVER, he still gets aggressive if I try to pick him up when he is sleeping or all coiled up. Personally I would wait until he is moving around and looking curious before picking him up and handling him, let him decide when he wants to be handled. If he is sleeping or coiled up I don't even try to clean his cage or pick him up or even touch him, I just get a spare tub all clean and ready for him and move him when he is ready. When he wants to be handled I put him in a clean tub when I'm done playing with him. Luckily I have tubs with clear windows on the front and I can tell when he is wanting to play. Works like a charm for me. Just my two cents...