You have to allow the CO2 to get out of the fermenter somehow.
It won't matter that much if you strain your wort, as long as you can be patient enough to let all the stuff settle to the bottom of the carboy before you transfer and bottle.
For sure try to salvage what you can. It's probably still good, as long as you don't use the stuff that actually blew out of your carboy.
And, don't be afraid to practice making complete sentences here. Brewing is a little technical, and being clear about your situation will make your questions easier to answer.