I think it's important to keep in mind that online recruiting databases are not always accurate when it comes to official offers. If I'm not mistaken, all of the information they list is based on what the player tells them.
As many know, official offers are often a fluid thing. Some of the kids that ended up signing with FCS teams may have had an offer from UW at one point, but had it pulled as other players committed (even at other positions). Recruits are often excited to inform the sites of new offers but often don't update them when offers have been pulled.