installed CWM recovery over TWRP with rom manager- how to remove CWM?

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http://forum.xda-developers.com – need some help please. just did something pretty dumb in a moment of not thinking. i went into rom manager and flashed cwm recovery (I'm using Hairy Bean 1.51 with TWRP) over the damn TWRP recovery, then did a system backup through rom manager. now I can boot into the rom, but no chance of recovery (as i'm guessing there is a twrp/cwm and possibly jb/ics conflict - if the rom manager flashed ics cwm recovery) how do I get back my twrp recovery? NB. Rom manager shows both TWRP recovery as well as CWM flashed and I can choose which i want to use... but when I pick TWRP, I still cannot acce (HowTos)