Agreed, i do really hope there is another way, i do understand the 4th wall breaking-undertale style-you made a choice and You are stuck with it, BUT.... i am not realy that fine with it. :(
And yeh, i am not sure playing a new game will revert this (not to mention that replaying from scratch after last time when old saves bacame obsolete was problematic alredy, thankfull for the items adding options though)