Donald Trump has in the past used his courtroom testimonials to spread his beliefs about election interference, but on Thursday his testimony in the E. Jean Carroll case was limited to about three minutes in which he was mostly kept in line. That’s in part due to a smart technique by Carroll’s attorney, an ex-prosecutor said on Thursday. The former president’s brief set of answers were no accident, according to former federal prosecutor Renato Mariotti, who often appears on MSNBC. Mariotti on social media specifically highlighted a move by Carroll’s lawyer, Roberta Kaplan of Kaplan Hecker & Fi…