krausen stuck

I got home from work with no bubbling of my blow off tube so I just thought fermentation had sloed, but I watched it for a while and then looked closer at the neck of my carboy to see that the krausen from my IPA had built up and gotten stuck in the neck and was not letting any air pass through it. I knocked the krausen down with a sanitised piece of my blow off tube and then reinstalled it. Has fermentation stopped and do I need to repitch, or can I aerate the wort again to get it back going? Thanks in advance for all the help.

ok update everyone, put an airlock on got in the shower and when I got out the airlock was getting a bubble every 5 seconds or so. Hopefully all is good.
Thanks

Everything will be fine. You are lucky that it didn't blow and spew beer all over.