We are long passed the time in this industry when it was wise to hang onto a TM.
Clean your portfolio and drop all tm's while you still can.
Go Daddy has a feature in their cp called 'delete selected', I used to use it in the old days when I got a C&D, it forces the domain into redeption right away. ( HINT: If you use it, change your whois to junk before hitting delete selected.)
-=DCG=-