I have a temporary solution that I have worked out, still looking for a better solution.  I build a SQL function and added that to my query to "remove all the tags"  Took an example from (http://www.thescripts.com/forum/thread591852.html) and modified to keep the <BR> and </p> and remove the rest.  I am sure I will have to keep modifing onward.

Modified query to be:

select DisplayName,
 (Select PropertyValue from userProfile where UserID = Users.UserID and PropertyDefinitionID = 65) as [City],
 (Select PropertyValue from userProfile where UserID = Users.UserID and PropertyDefinitionID = 66) as [Province],
 (Select PropertyValue from userProfile where UserID = Users.UserID and PropertyDefinitionID = 67) as [Country],
 dbo.RemoveHTMLTags (Select PropertyValue from userProfile where UserID = Users.UserID and PropertyDefinitionID = 74)) as [Biography]
from users
 inner join UserRoles on users.userid = userroles.userid
 where userroles.RoleID = 7
order by LastName

Function Added to DNN Db

alter function dbo.RemoveHTMLTags
(
@tmpstr as varchar(8000)
)
RETURNS varchar(8000)
AS
BEGIN
declare @i int

set @i = patindex('%&lt;br&gt;%', @tmpstr)
while @i > 0
begin
 set @tmpstr = stuff(@tmpstr, @i, charindex('&lt;br&gt;', @tmpstr, @i) - @i + 10, 'wsxcderfv')
 set @i = patindex('%&lt;br&gt;%', @tmpstr)
end

set @i = patindex('%&lt;/P&gt;%', @tmpstr)
while @i > 0
begin
 set @tmpstr = stuff(@tmpstr, @i, charindex('&lt;/P&gt;', @tmpstr, @i) - @i + 10, 'wsxcderfv')
 set @i = patindex('%&lt;/P&gt;%', @tmpstr)
end

set @i = patindex('%&amp;nbsp;%', @tmpstr)
while @i > 0
begin
 set @tmpstr = stuff(@tmpstr, @i, charindex('&amp;nbsp;', @tmpstr, @i) - @i + 10, ' ')
 set @i = patindex('%&amp;nbsp;%', @tmpstr)
end

set @i = patindex('%&lt;%&gt;%', @tmpstr)
while @i > 0
begin
 set @tmpstr = stuff(@tmpstr, @i, charindex('&gt;', @tmpstr, @i) - @i + 4, '')
 set @i = patindex('%&lt;%&gt;%', @tmpstr)
end

set @i = patindex('%wsxcderfv%', @tmpstr)
while @i > 0
begin
 set @tmpstr = stuff(@tmpstr, @i, charindex('wsxcderfv', @tmpstr, @i) - @i + 9, '<br>')
 set @i = patindex('%wsxcderfv%', @tmpstr)
end

return @tmpstr
END

I think you should add this in your code to eliminate the tags.

HttpUtility.HtmlDecode(Biography).