Certified GKH Gardening Expert
The best thing to do now is to simply cut the flower stalk. If you have lost the blooms, it will not reproduce new blooms this year. If the blooms had remained intact, you could attach a chopstick or a skewer to the side of the flower stalk to keep it intact and upright while the blooms opened.
Even though you lost the blooms this year, that does not mean you can't enjoy it as a nice houseplant and keep it to enjoy its blooms next year. This article will help with that: