this happened today and we werent really sure how this should play out. i played blind submission and took the muscle with the sole purpose of getting it killed. which i did accomplish. but then the card text isnt a response or anything i could choose not to trigger. now i figured that since i control the card until the end of the phase i could then attach it to one of my characters, but then comes the attachment rules where if you on longer meet the requirements it gets discarded. so at the end of the phase i no longer control the card and now the 'attach to a character you control' part isnt being met. so we decided that at the end of the phase the card would just end up in the discard pile.
is the the correct way for this to be played out?