If this ever happens to you -
I had (2) 8' blades get stuck, while fully deployed, in a big submerged log.
PP hydraulics wouldn't move it, Troller couldn't free it, bumped fwd and reverse with OB but worried might remove the power poles and brackets.
Though about swimming it out but people die doing that.
After a few ideas and tries, looped a dock line around pole, it floats. Used 8 oz lure retriever to sink rope down pole, cinched down and holding. Found that must hold PP control in up position while pulling from over top of OB and it eventually broke free. 2nd pole came loose after boat pivoted once one pole was cleared.
I've had them stick in mud a few times, and come free relatively easily. This one was locked in.