I 'blocked' the psydex cries on accident, and I don't know how to fix it. Can anyone help?

I presume you blocked them with some ad blocking add on for your browser. You can probably fix this in the ad blocker's settings.

I can't fix it without deleting the adblock... Using Adblock Plus on Firefox.

ah. I can be more helpful then, perhaps.

Open Firefox menu, click Add-ons.
Click the Extensions tab.
Click on Preferences for AdBlock Plus.
There should be a "Filter Preferences..." button somewhere. Click that.
Select the Custom Filters tab and click to highlight "Ad blocking rules" (as opposed to "Exception Rules")
There should be a filter rule like ||psypokes.com/dex/crydex/*. Uncheck Enabled.

I'd think that as long as our versions of Firefox and Adblock Plus aren't too different you should be able to follow these steps.