Fueling & Injection - BIG fuel pressure drop at WOT?

I have read a shit ton of threads in searching that have had small pressure drops at WOT but nothing like this. I recently had my car go very lean at wot and found out that the fuel pressure is dropping from ~53psi at idle to as low as 30 under wot in the higher rpms. I don't think it was a gradual change either since I went from a steady afr on one pass to a VERY lean afr on the next. I have a racetronix pump in my car that has about 3k miles on it. I never put in a hot wire kit so I was going to try that but I don't think that's going to help at this point. I just changed the filter also but no change in pressure. It seems to me like the pump just took a shit but I want to make sure before I get a new one. What do yall think?

It kind of sounds like the pump, my buddies would do that but his would drop so low the engine would shut off, but he had a 170,000 mile original pump too...

Hose split??

Hose split??

I checked all the lines I could see without pulling anything apart, didn't see any damage. I'll be pulling the pump when I get my work truck back and checking things a little more in depth. I guess if I don't find any visual damage I'll have to order a new pump and hotwire kit :(

Any verdict yet?

Nothing yet. I've had some other things to deal with but I'll be pulling the pump soon and possibly replacing it so I'll post up what I find.