Retirement tax questions

Hoping this is my last question.  Was wrapping up my 2018 amended return and making sure I signed everything.  Noticed on page 2 of the 5329 form the signature section at the bottom of the page.  The 5329 form says 'Sign Here Only if You Are Filing This Form by Itself and Not With Your Tax Return'.   I had signed here but now wondering if I should print out an unsigned version instead.  Thought it odd that it would indicate not to sign on the signature line.   Thanks