He stays if the offense he has wasted 3 drafts on goes up to the top 10, and he shows he has learned how to make in game adjustments.
Since the Bucs went all defense this year in the draft, I guess you are talking about these 3 drafts:
2004
Rd Sel# Player Pos. School
1 15 Michael Clayton WR Louisiana State 3 79 Marquis Cooper OLB Washington
4 111 Will Allen FS Ohio State
5 146 Jeb Terry G North Carolina 2005
Rd Sel# Player Pos. School
1 5 Carnell Williams RB Auburn 2 36 Barrett Ruud MLB Nebraska
3 71 Alex Smith TE Stanford
3 91 Chris Colmer T North Carolina State
4 107 Dan Buenning G Wisconsin 5 141 Donte Nicholson SS Oklahoma
5 155 Larry Brackins WR Pearl River JC Â
2006
Rd Sel# Player Pos. School
1 23 Davin Joseph G Oklahoma
2 59 Jeremy Trueblood T Boston College
3 90 Maurice Stovall WR Notre Dame 4 122 Alan Zemaitis CB Penn State
5 156 Julian Jenkins DE Stanford
So there was a 1 and a 5 in 2004 :Â a 1, 3, 3, 4, 5 in 2005 : and a 1, 2 and 3 in 2006
The players you consider to be "wastes" include
Davin Joseph
Jeremy Trueblood
Maurice Stovall
Cadillac Williams
Alex Smith
Dan Buenning
Michael Clayton
Jeb Terry
Colmer and Brackins were complete busts.  Clayton is a bust if he doesn't turn it around this year.  But the rest form the nucleus of this team's future.  I don't think that can be considered a "waste". Colmer was the biggest waste followed closely by defensive player Marquis Cooper. But you didn't mention the wasted picks on defense so I guess Cooper doesn't count.
A waste would be to have 2 first round picks in your first draft thanks to Sam Wyche and take Regan Upshaw and Marcus Jones with those picks when you already have a solid DL.
I suppose you think all the defensive players picked this year were a waste too?  LOL!