I believe another method for preventing shares in margin accts to be borrowed by shorters is to simply put in a sell order for them (at say $10 or $15).  That way they are not available to lend out since you've already put a sell order in.  Make it effective until mid Nov.

Of course, if things really start moving upward, you may want to adjust the selling price, but it will certainly make it more difficult for shorters to find available shares to meet delivery requirements.

masila