I definitely would risk it! There are almost always StubHub tickets available, and depending on your budget, you can also try the cancellation line. I believe the tickets there usually average somewhere around $200. If it really comes to the end and you're unable to get tickets on StubHub, the BOM tickets might be an option. If neither of those is an option and you find that you might not have a show to go to, I suggest running to rush one of the easy rush shows! If it's like five minutes before curtain or something like that, you can bolt down the street and across Times Square to the Lyceum theatre, which has Play That Goes Wrong. If you're not a fan, Bronx Tale is also a super easy rush, and the Longacre Theatre is just on 48th, and I can personally attest to the fact that it is indeed possible to get a rush ticket RIGHT before curtain! But I do think that you'll be able to see DEH!
Best of luck to you, and I hope you enjoy!