What does the cryptic crossword clue "Difficult situations — get Potter on board! (8)" mean?

The wordplay uses a container (one word inside another). TINKER (synonym="TINKER") in SS (synonym="SS") = STINKERS The answer is STINKERS.

Difficult situations — get Potter on board! (8)

Guardian Cryptic #29150 | 27 Across | 2023-08-16 flower