Spider Mites on New Dendrobium nobile

[aliceinwl]

So, I accidentally brought home a “Typhoid Mary” about 4 days ago. It’s a small caned NOID Dendrobium noblie type. Today I noticed some sooty mildew and then a lot of stippling on the undersides of the leaves. From there, I was able to locate some mites. It was sitting next to a Phalaenopsis and a Dendrobium phalaenopsis type. How prone are these species to spider mites? I can’t find any on them yet.

I thoroughly sprayed down the Dendrobium nobile with an organic insecticidal soap that was advertised as being effective against mites. It’s currently in the peat perlite mix I purchased it in and just coming into bloom. I was going to let it flower first, but with the mite situation should I just repot now? I’m hoping the spray doesn’t destroy the buds, but there was no avoiding them.