You misunderstand me. I was not referring to the [[User:Viking]] deletion. 
He deleted the page [[User talk:Kils]] after he responded there to my 
query regarding the Kils/Viking relationship, even before I could read the 
response. I restored the page and revoked his sysop status to prevent him 
from deleting it again, at which point he reverted it to a prior revision. 
I restored the response and protected the page, to have an open track 
record for this discussion. Kils then posted on my page (in German) that 
he did not want his talk page to "link to pornographic pages" and asked 
me, in very formal language, to delete it. Of course there is no link to 
any pornographic page on the talk page, just his response which I posted 
here.

That he may have deleted the Viking experiment without prior discussion, I 
can understand. But normally pages should be listed on [[Wikipedia:Votes 
for deletion]] first, and in this case, he really just used his sysop 
privileges to remove something which, for whatever reason, he did not want 
to be publicly visible.

Regards,

Erik