Is it a terrible idea to send a Bug/Flying Pokémon to deal with a massive, rocky bloc of ice? Why, yes it is!

Is that going to stop Ash from trying? No.

His Scyther will fly in and just... try to pull the part out from above without attracting the Avalugg's attention, with strict orders to get the hell away if it sees him. It is very likely that no one involved will enjoy the experience.