I remember Breyton Paulse used to do a flick flack into a backward somersault but he was so light and had such momentum he could almost do it without tucking. Even he didn't try a backward somersault while still moving forward...
[video=youtube;mOPLsNED6FY]https://www.youtube.com/watch?v=mOPLsNED6FY[/video]
23 seconds..
[video=youtube;mOPLsNED6FY]https://www.youtube.com/watch?v=mOPLsNED6FY[/video]
23 seconds..