Trab speaks from experience; i've said this so has Vince Basile who whatever you make of him has plenty of experience and hates deads. Deads, rows anything that aggrevates the lower back aren't necessary.
Do not try to "work thru" problematic exercises, find alternative exercises or variations on existing ones, keeping the reps high & rests between sets fairly low, to keep the back warm. Such as:
-Hypers
-Rack pulls instead of deads, using high reps and/or cables or bands
-Back-braced lat work: in the case of rows instead of barbell rows t-bars, 1-arm DB, DB/BB rows while lying face-down on a bench, hammer rows, etc. Having the back braced not only minimizes back strain it also isolates the lats better.
-Forgo direct lower-back motions altogether, letting indirect exercises do the work - squats for example will work the lower back, so will cleans. Same rule applies, keep the reps higher.
-High reps at all times, with low rest times between sets to keep intensity up at lower weight and to keep the back warm.
Because once it's FU it's hard to get it back to normal, and direct lower back work can easily create problems especially when going heavy. Keep the reps high.