Is there any possible that eligius efface my block record at the block list?
If they want to do this, they could simply delete all your record, as if you have never mined.
I use 3rd party online archive service to archive the account page everyday. Or Google's page snapshot will do for me automatically.
Deleting my account will instantly be caught.
So you can post some screenshots of the blocks you found then?
This will prove if they had deleted any of your found blocks.
I could select some block from chain which is mined by my friend in his private pool and annonce that is mined by me in eligius.
So, your propose might not be a working one, sorry.