Mortgage Prepayment / Loan Druid

[Adam Rosi-Kessel]

I have a question similar to a recent thread about calculating with
current account balance <http://shorl.com/babribodrogoje>. 

I made *one* prepayment to my mortgage (accidentally, actually.) Is there
any way to adjust my payments going forward without redoing the whole
mortgage druid? If I did re-do the mortgage druid, would it even work?
Would I start over from the day after my prepayment with the
post-prepayment balance?