No, its nothing to do with not being flushed. It most proberly was, the reason its so sticky and tastes planty is because it hasnt been cured.

If you slow dry it it breaks down all the chlorophyl and this is what gives buds its own flavour. Just dry it out and it'll b fine.

It will also make it alot stronger, because fresh THC isnt fully phycoactive, when cured, alot more of it is phycoactive.