I tried attaching a new host about a week ago and mistyped my password, it appears that it attached, but it doesn't show up under my account. So I removed the account manager from the host and reattached, using the proper credentials and get the same effects.

The host ID is: 518551
BOINC Version: 7.2.47 on Debian 7 64 bit
acct_mgr_login.xml:
<acct_mgr_login>
<login>mxtreme311</login>
<password_hash>************REMOVED***********</password_hash>
<previous_host_cpid>ceb5c7610bb5b854438bc0e80c169eb8</previous_host_cpid>
<next_rpc_time>1403851062.140562</next_rpc_time>
<opaque>
<host_authenticator>fbbb251532340e31b9a7e2a8c2d54816</host_authenticator>
</opaque>
</acct_mgr_login>

acct_mgr_reply.xml:
<?xml version="1.0" encoding="UTF-8"?>
<acct_mgr_reply>
<name>BOINCstatsBAM!</name>
<version>2.2.5</version>
<server>www4</server>
<signing_key>
1024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.
</signing_key>
<message><![CDATA[BAM! User: 158923, ]]></message>
<message>BAM! Host: 518551</message>
<message>Number of BAM! connections for this host: 11</message>
<repeat_sec>86400</repeat_sec>
<host_venue></host_venue>
<opaque>
<host_authenticator>fbbb251532340e31b9a7e2a8c2d54816</host_authenticator>
</opaque>
</acct_mgr_reply>

Uninstall the client, REMOVE the BOINC data directory. Re install and reattach.

I have tried that twice to no avail.

So is this something that just cannot be solved by the BoincStats Team?

you may try the following:

uninstall boinc and delete the data directory again.
then reinstall boinc but do not attach to bam
wait maybe 30 days till you can delete the host from your host list on boincstats/bam, you will need to click on show all host when it is no longer displayed on the host list..
than reattach to bam using the correct password
or if you can get willy to use his powers and delete it for you then after he does
attach to bam.

may work or may not.

I have removed the software completely... WILLY??? Could you please delete this so I can start using this to crunch???

You can try again.

Worked great!!! Thanks Willy!