Answer: HERO
In each grid, it's possible to insert two moves to change the end result to being a solved puzzle. The inserted moves are shown below:
Across the 10 grids, each added move is inserted at a unique index. In order, we have:
- RRDRDLDRUUULUDDRDRRL
- LRDLDRUULLURRRDDULULDD
- ULDLDRURDLLDDLDDRDUUULDLDRRRRUL
- RRRDURLLDRULDRDRLUURDRUDUULLDR
- UULRDRRULLDLDLDRULURUURRDRLL
- DRURDULULDRDLDLLUUURDRRUULDRUDDLLULUD
- LUURUURLLDDLUUDDRRULDRRUU
- LRURRUDDLULLUURDLLDRRDRRRUDLULLDRDR
- DRDDRRUULUDRDDLULUURUURDDDLRULLLURUR
- ULDLLUUURRDDLUDLUUDRRUUDDDRDLL
DRDRULUULURLLLDRDLDRThis sequence of moves can be played out on the final extraction grid. After doing so, the crates labelled 1 through 4 cover the letters of the answer: HERO.