i was once a bit of a salsaholic myself as it happens. before i realised i needed the deeper spiritual connect of tango. i know something of dance induced injury too. while dancing with a substantial and eager lady some years ago i initiated an anti-clockwise lead. she responded (notice i don't say 'followed') by charging in the opposite direction wi great gusto. what i should have done, although this is considered extremely rude in tango circles, is let go and let her get on with it. however i did persevere. MISTAKE! by the end of the week i seriously couldn't walk. EVENTUALLY my doc diagnosed a slipped disc. went to useless physios to no avail. hobbled around for a while and slowly semi recovered. i'm back dancing again now .... but not with HER!!!!!!!
moral of the story? .... leave that up to you.
best
ps i think we've missed the turning on the valparaiso - swansea thread don't you? wanna start again?